157996864 has 14 divisors (see below), whose sum is σ = 313525154. Its totient is φ = 78998400.

The previous prime is 157996831. The next prime is 157996871. The reversal of 157996864 is 468699751.

It can be written as a sum of positive squares in only one way, i.e., 130873600 + 27123264 = 11440^2 + 5208^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1234287 + ... + 1234414.

Almost surely, 2^157996864 is an apocalyptic number.

It is an amenable number.

157996864 is a deficient number, since it is larger than the sum of its proper divisors (155528290).

157996864 is an equidigital number, since it uses as much as digits as its factorization.

157996864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2468713 (or 2468703 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 55.

The square root of 157996864 is about 12569.6803459754. The cubic root of 157996864 is about 540.6084408440.

The spelling of 157996864 in words is "one hundred fifty-seven million, nine hundred ninety-six thousand, eight hundred sixty-four".