137638708 has 12 divisors (see below), whose sum is σ = 241236772. Its totient is φ = 68713920.

The previous prime is 137638691. The next prime is 137638723. The reversal of 137638708 is 807836731.

It can be written as a sum of positive squares in 2 ways, for example, as 103673124 + 33965584 = 10182^2 + 5828^2 .

It is a congruent number.

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, 23385 + ... + 28672.

Almost surely, 2^137638708 is an apocalyptic number.

It is an amenable number.

137638708 is a deficient number, since it is larger than the sum of its proper divisors (103598064).

137638708 is a wasteful number, since it uses less digits than its factorization.

137638708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52722 (or 52720 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 137638708 is about 11731.9524376806. The cubic root of 137638708 is about 516.3135575941.

The spelling of 137638708 in words is "one hundred thirty-seven million, six hundred thirty-eight thousand, seven hundred eight".