137907656 has 16 divisors (see below), whose sum is σ = 259159500. Its totient is φ = 68798464.

The previous prime is 137907647. The next prime is 137907667. The reversal of 137907656 is 656709731.

It can be written as a sum of positive squares in 2 ways, for example, as 137686756 + 220900 = 11734^2 + 470^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15605 + ... + 22788.

Almost surely, 2^137907656 is an apocalyptic number.

It is an amenable number.

137907656 is a deficient number, since it is larger than the sum of its proper divisors (121251844).

137907656 is a wasteful number, since it uses less digits than its factorization.

137907656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38848 (or 38844 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 44.

The square root of 137907656 is about 11743.4090450772. The cubic root of 137907656 is about 516.6496334771.

The spelling of 137907656 in words is "one hundred thirty-seven million, nine hundred seven thousand, six hundred fifty-six".