137631657 has 8 divisors (see below), whose sum is σ = 183587040. Its totient is φ = 91715360.

The previous prime is 137631623. The next prime is 137631671. The reversal of 137631657 is 756136731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 137631657 - 2¹⁴ = 137615273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (137631607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219 + ... + 16592.

It is an arithmetic number, because the mean of its divisors is an integer number (22948380).

Almost surely, 2^137631657 is an apocalyptic number.

It is an amenable number.

137631657 is a deficient number, since it is larger than the sum of its proper divisors (45955383).

137631657 is a wasteful number, since it uses less digits than its factorization.

137631657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19543.

The product of its digits is 79380, while the sum is 39.

The square root of 137631657 is about 11731.6519297156. The cubic root of 137631657 is about 516.3047408179.

It can be divided in two parts, 1376 and 31657, that added together give a palindrome (33033).

The spelling of 137631657 in words is "one hundred thirty-seven million, six hundred thirty-one thousand, six hundred fifty-seven".