64564344 has 64 divisors (see below), whose sum is σ = 193149600. Its totient is φ = 19865088.

The previous prime is 64564333. The next prime is 64564361. The reversal of 64564344 is 44346546.

64564344 is a `hidden beast` number, since 6 + 4 + 5 + 643 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 64564299 and 64564308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8689 + ... + 14304.

Almost surely, 2^64564344 is an apocalyptic number.

It is an amenable number.

64564344 is an abundant number, since it is smaller than the sum of its proper divisors (128585256).

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

64564344 is a wasteful number, since it uses less digits than its factorization.

64564344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23021 (or 23011 counting only the distinct ones).

The product of its digits is 138240, while the sum is 36.

The square root of 64564344 is about 8035.1940860193. The cubic root of 64564344 is about 401.1722777228.

The spelling of 64564344 in words is "sixty-four million, five hundred sixty-four thousand, three hundred forty-four".