64564332 has 24 divisors (see below), whose sum is σ = 172171776. Its totient is φ = 18446928.

The previous prime is 64564327. The next prime is 64564333. The reversal of 64564332 is 23346546.

It is a junction number, because it is equal to n+sod(n) for n = 64564293 and 64564302.

It is not an unprimeable number, because it can be changed into a prime (64564333) 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, 384228 + ... + 384395.

It is an arithmetic number, because the mean of its divisors is an integer number (7173824).

Almost surely, 2^64564332 is an apocalyptic number.

It is an amenable number.

64564332 is an abundant number, since it is smaller than the sum of its proper divisors (107607444).

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

64564332 is a wasteful number, since it uses less digits than its factorization.

64564332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768637 (or 768635 counting only the distinct ones).

The product of its digits is 51840, while the sum is 33.

The square root of 64564332 is about 8035.1933393043. The cubic root of 64564332 is about 401.1722528687.

The spelling of 64564332 in words is "sixty-four million, five hundred sixty-four thousand, three hundred thirty-two".