64366512 has 80 divisors (see below), whose sum is σ = 198320640. Its totient is φ = 17588736.

The previous prime is 64366493. The next prime is 64366513. The reversal of 64366512 is 21566346.

It is a super-2 number, since 2×64366512² = 8286095734092288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64366513) 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, 3564 + ... + 11892.

It is an arithmetic number, because the mean of its divisors is an integer number (2479008).

Almost surely, 2^64366512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64366512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99160320).

64366512 is an abundant number, since it is smaller than the sum of its proper divisors (133954128).

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

64366512 is a wasteful number, since it uses less digits than its factorization.

64366512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8370 (or 8364 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 64366512 is about 8022.8742979060. The cubic root of 64366512 is about 400.7621137012.

The spelling of 64366512 in words is "sixty-four million, three hundred sixty-six thousand, five hundred twelve".