117687157 has 4 divisors (see below), whose sum is σ = 134499616. Its totient is φ = 100874700.

The previous prime is 117687151. The next prime is 117687161. The reversal of 117687157 is 751786711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 117687157 - 2²³ = 109298549 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 (117687151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8406219 + ... + 8406232.

It is an arithmetic number, because the mean of its divisors is an integer number (33624904).

Almost surely, 2^117687157 is an apocalyptic number.

It is an amenable number.

117687157 is a deficient number, since it is larger than the sum of its proper divisors (16812459).

117687157 is an equidigital number, since it uses as much as digits as its factorization.

117687157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16812458.

The product of its digits is 82320, while the sum is 43.

The square root of 117687157 is about 10848.3711680602. The cubic root of 117687157 is about 490.0529680350.

The spelling of 117687157 in words is "one hundred seventeen million, six hundred eighty-seven thousand, one hundred fifty-seven".