| Base | Representation |
|---|---|
| bin | 111110100011… |
| … | …010101110101 |
| 3 | 1010212002101200 |
| 4 | 332203111311 |
| 5 | 13144211220 |
| 6 | 1343243113 |
| 7 | 256243443 |
| oct | 76432565 |
| 9 | 33762350 |
| 10 | 16397685 |
| 11 | 928a907 |
| 12 | 55a9499 |
| 13 | 3521895 |
| 14 | 226bb93 |
| 15 | 168d890 |
| hex | fa3575 |
16397685 has 12 divisors (see below), whose sum is σ = 28422732. Its totient is φ = 8745408.
The previous prime is 16397683. The next prime is 16397687. The reversal of 16397685 is 58679361.
It is a happy number.
16397685 is a `hidden beast` number, since 1 + 639 + 7 + 6 + 8 + 5 = 666.
It is an interprime number because it is at equal distance from previous prime (16397683) and next prime (16397687).
It can be written as a sum of positive squares in 2 ways, for example, as 12489156 + 3908529 = 3534^2 + 1977^2 .
It is not a de Polignac number, because 16397685 - 21 = 16397683 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 364393 = 16397685 / (1 + 6 + 3 + 9 + 7 + 6 + 8 + 5).
It is a self number, because there is not a number n which added to its sum of digits gives 16397685.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (16397681) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182152 + ... + 182241.
It is an arithmetic number, because the mean of its divisors is an integer number (2368561).
Almost surely, 216397685 is an apocalyptic number.
16397685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
16397685 is a deficient number, since it is larger than the sum of its proper divisors (12025047).
16397685 is a wasteful number, since it uses less digits than its factorization.
16397685 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 364404 (or 364401 counting only the distinct ones).
The product of its digits is 272160, while the sum is 45.
The square root of 16397685 is about 4049.4055119239. The cubic root of 16397685 is about 254.0548634252.
The spelling of 16397685 in words is "sixteen million, three hundred ninety-seven thousand, six hundred eighty-five".
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