64157800 has 48 divisors (see below), whose sum is σ = 170480160. Its totient is φ = 21996480.

The previous prime is 64157789. The next prime is 64157809. The reversal of 64157800 is 875146.

It is not an unprimeable number, because it can be changed into a prime (64157809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21514 + ... + 24313.

It is an arithmetic number, because the mean of its divisors is an integer number (3551670).

Almost surely, 2^64157800 is an apocalyptic number.

It is an amenable number.

64157800 is an abundant number, since it is smaller than the sum of its proper divisors (106322360).

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

64157800 is a wasteful number, since it uses less digits than its factorization.

64157800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45850 (or 45841 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 64157800 is about 8009.8564281765. The cubic root of 64157800 is about 400.3284801781.

The spelling of 64157800 in words is "sixty-four million, one hundred fifty-seven thousand, eight hundred".