64125564 has 96 divisors (see below), whose sum is σ = 168376320. Its totient is φ = 18889728.

The previous prime is 64125563. The next prime is 64125569. The reversal of 64125564 is 46552146.

It is a super-2 number, since 2×64125564² = 8224175916636192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64125563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 370582 + ... + 370754.

It is an arithmetic number, because the mean of its divisors is an integer number (1753920).

Almost surely, 2^64125564 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 64125564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84188160).

64125564 is an abundant number, since it is smaller than the sum of its proper divisors (104250756).

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

64125564 is a wasteful number, since it uses less digits than its factorization.

64125564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299 (or 297 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

The square root of 64125564 is about 8007.8439045726. The cubic root of 64125564 is about 400.2614207774.

The spelling of 64125564 in words is "sixty-four million, one hundred twenty-five thousand, five hundred sixty-four".