157696637 has 8 divisors (see below), whose sum is σ = 189710400. Its totient is φ = 128054304.

The previous prime is 157696613. The next prime is 157696639. The reversal of 157696637 is 736696751.

157696637 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 157696637 - 2¹² = 157692541 is a prime.

It is a super-2 number, since 2×157696637² = 49736458642219538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157696639) 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, 592712 + ... + 592977.

It is an arithmetic number, because the mean of its divisors is an integer number (23713800).

Almost surely, 2^157696637 is an apocalyptic number.

It is an amenable number.

157696637 is a deficient number, since it is larger than the sum of its proper divisors (32013763).

157696637 is a wasteful number, since it uses less digits than its factorization.

157696637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185715.

The product of its digits is 1428840, while the sum is 50.

The square root of 157696637 is about 12557.7321599085. The cubic root of 157696637 is about 540.2658007866.

The spelling of 157696637 in words is "one hundred fifty-seven million, six hundred ninety-six thousand, six hundred thirty-seven".