664298157 has 16 divisors (see below), whose sum is σ = 917280000. Its totient is φ = 427124544.

The previous prime is 664298153. The next prime is 664298161. The reversal of 664298157 is 751892466.

664298157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (664298153) and next prime (664298161).

It is not a de Polignac number, because 664298157 - 2² = 664298153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664298153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86719 + ... + 94067.

It is an arithmetic number, because the mean of its divisors is an integer number (57330000).

Almost surely, 2^664298157 is an apocalyptic number.

It is an amenable number.

664298157 is a deficient number, since it is larger than the sum of its proper divisors (252981843).

664298157 is a wasteful number, since it uses less digits than its factorization.

664298157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8420.

The product of its digits is 725760, while the sum is 48.

The square root of 664298157 is about 25773.9821719501. The cubic root of 664298157 is about 872.5446952635.

The spelling of 664298157 in words is "six hundred sixty-four million, two hundred ninety-eight thousand, one hundred fifty-seven".