64131792 has 40 divisors (see below), whose sum is σ = 166653024. Its totient is φ = 21250944.

The previous prime is 64131779. The next prime is 64131799. The reversal of 64131792 is 29713146.

It is a super-2 number, since 2×64131792² = 8225773490262528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64131799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4443 + ... + 12165.

Almost surely, 2^64131792 is an apocalyptic number.

It is an amenable number.

64131792 is an abundant number, since it is smaller than the sum of its proper divisors (102521232).

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

64131792 is a wasteful number, since it uses less digits than its factorization.

64131792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7907 (or 7901 counting only the distinct ones).

The product of its digits is 9072, while the sum is 33.

The square root of 64131792 is about 8008.2327638500. The cubic root of 64131792 is about 400.2743784148.

The spelling of 64131792 in words is "sixty-four million, one hundred thirty-one thousand, seven hundred ninety-two".