157923687 has 8 divisors (see below), whose sum is σ = 221647360. Its totient is φ = 99741240.

The previous prime is 157923683. The next prime is 157923697. The reversal of 157923687 is 786329751.

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

It is not a de Polignac number, because 157923687 - 2² = 157923683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157923683) 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, 1385239 + ... + 1385352.

It is an arithmetic number, because the mean of its divisors is an integer number (27705920).

Almost surely, 2^157923687 is an apocalyptic number.

157923687 is a deficient number, since it is larger than the sum of its proper divisors (63723673).

157923687 is a wasteful number, since it uses less digits than its factorization.

157923687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2770613.

The product of its digits is 635040, while the sum is 48.

The square root of 157923687 is about 12566.7691551966. The cubic root of 157923687 is about 540.5249661641.

The spelling of 157923687 in words is "one hundred fifty-seven million, nine hundred twenty-three thousand, six hundred eighty-seven".