64538832 has 20 divisors (see below), whose sum is σ = 166725440. Its totient is φ = 21512928.

The previous prime is 64538821. The next prime is 64538857. The reversal of 64538832 is 23883546.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 672232 + ... + 672327.

It is an arithmetic number, because the mean of its divisors is an integer number (8336272).

Almost surely, 2^64538832 is an apocalyptic number.

It is an amenable number.

64538832 is an abundant number, since it is smaller than the sum of its proper divisors (102186608).

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

64538832 is a wasteful number, since it uses less digits than its factorization.

64538832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344570 (or 1344564 counting only the distinct ones).

The product of its digits is 138240, while the sum is 39.

The square root of 64538832 is about 8033.6064130626. The cubic root of 64538832 is about 401.1194309302.

The spelling of 64538832 in words is "sixty-four million, five hundred thirty-eight thousand, eight hundred thirty-two".