137656857 has 16 divisors (see below), whose sum is σ = 198665600. Its totient is φ = 84281472.

The previous prime is 137656829. The next prime is 137656873. The reversal of 137656857 is 758656731.

It is not a de Polignac number, because 137656857 - 2¹⁴ = 137640473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137656807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1108 + ... + 16629.

It is an arithmetic number, because the mean of its divisors is an integer number (12416600).

Almost surely, 2^137656857 is an apocalyptic number.

It is an amenable number.

137656857 is a deficient number, since it is larger than the sum of its proper divisors (61008743).

137656857 is a wasteful number, since it uses less digits than its factorization.

137656857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17952.

The product of its digits is 1058400, while the sum is 48.

The square root of 137656857 is about 11732.7258981023. The cubic root of 137656857 is about 516.3362502486.

The spelling of 137656857 in words is "one hundred thirty-seven million, six hundred fifty-six thousand, eight hundred fifty-seven".