| Base | Representation |
|---|---|
| bin | 111011011011111… |
| … | …010000101101000 |
| 3 | 2120111100120020000 |
| 4 | 323123322011220 |
| 5 | 4020233442220 |
| 6 | 242540503000 |
| 7 | 33465550500 |
| oct | 7333720550 |
| 9 | 2514316200 |
| 10 | 997171560 |
| 11 | 471971830 |
| 12 | 239b4aa60 |
| 13 | 12b789958 |
| 14 | 96612a00 |
| 15 | 5c823390 |
| hex | 3b6fa168 |
997171560 has 480 divisors, whose sum is σ = 4260690720. Its totient is φ = 206841600.
The previous prime is 997171559. The next prime is 997171561. The reversal of 997171560 is 65171799.
It is an interprime number because it is at equal distance from previous prime (997171559) and next prime (997171561).
It is a super-2 number, since 2×9971715602 = 1988702240145667200, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (45).
It is not an unprimeable number, because it can be changed into a prime (997171561) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1746075 + ... + 1746645.
It is an arithmetic number, because the mean of its divisors is an integer number (8876439).
Almost surely, 2997171560 is an apocalyptic number.
997171560 is a gapful number since it is divisible by the number (90) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 997171560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2130345360).
997171560 is an abundant number, since it is smaller than the sum of its proper divisors (3263519160).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
997171560 is a wasteful number, since it uses less digits than its factorization.
997171560 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 619 (or 599 counting only the distinct ones).
The product of its (nonzero) digits is 119070, while the sum is 45.
The square root of 997171560 is about 31578.0233706925. The cubic root of 997171560 is about 999.0562963703.
The spelling of 997171560 in words is "nine hundred ninety-seven million, one hundred seventy-one thousand, five hundred sixty".
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