157199660 has 24 divisors (see below), whose sum is σ = 334644576. Its totient is φ = 62017920.

The previous prime is 157199639. The next prime is 157199683. The reversal of 157199660 is 66991751.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52376 + ... + 55295.

It is an arithmetic number, because the mean of its divisors is an integer number (13943524).

Almost surely, 2^157199660 is an apocalyptic number.

157199660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157199660 is an abundant number, since it is smaller than the sum of its proper divisors (177444916).

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

157199660 is a wasteful number, since it uses less digits than its factorization.

157199660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107753 (or 107751 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 44.

The square root of 157199660 is about 12537.9288560751. The cubic root of 157199660 is about 539.6976588285.

The spelling of 157199660 in words is "one hundred fifty-seven million, one hundred ninety-nine thousand, six hundred sixty".