157812660 has 72 divisors (see below), whose sum is σ = 499524480. Its totient is φ = 40252608.

The previous prime is 157812647. The next prime is 157812703. The reversal of 157812660 is 66218751.

157812660 is a `hidden beast` number, since 1 + 578 + 1 + 26 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14920 + ... + 23199.

It is an arithmetic number, because the mean of its divisors is an integer number (6937840).

Almost surely, 2^157812660 is an apocalyptic number.

157812660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157812660 is an abundant number, since it is smaller than the sum of its proper divisors (341711820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157812660 is a wasteful number, since it uses less digits than its factorization.

157812660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38157 (or 38152 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 157812660 is about 12562.3508946375. The cubic root of 157812660 is about 540.3982658658.

The spelling of 157812660 in words is "one hundred fifty-seven million, eight hundred twelve thousand, six hundred sixty".