997727310 has 48 divisors (see below), whose sum is σ = 2683549440. Its totient is φ = 256885440.

The previous prime is 997727303. The next prime is 997727317. The reversal of 997727310 is 13727799.

It is an interprime number because it is at equal distance from previous prime (997727303) and next prime (997727317).

It is a super-2 number, since 2×997727310² = 1990919570239672200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997727317) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 188526 + ... + 193745.

It is an arithmetic number, because the mean of its divisors is an integer number (55907280).

Almost surely, 2^997727310 is an apocalyptic number.

997727310 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

997727310 is an abundant number, since it is smaller than the sum of its proper divisors (1685822130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

997727310 is a wasteful number, since it uses less digits than its factorization.

997727310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382313 (or 382310 counting only the distinct ones).

The product of its (nonzero) digits is 166698, while the sum is 45.

The square root of 997727310 is about 31586.8217774438. The cubic root of 997727310 is about 999.2418620388.

The spelling of 997727310 in words is "nine hundred ninety-seven million, seven hundred twenty-seven thousand, three hundred ten".