64503372 has 24 divisors (see below), whose sum is σ = 159361776. Its totient is φ = 20236288.

The previous prime is 64503371. The next prime is 64503391. The reversal of 64503372 is 27330546.

It is not an unprimeable number, because it can be changed into a prime (64503371) 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, 157893 + ... + 158300.

It is an arithmetic number, because the mean of its divisors is an integer number (6640074).

Almost surely, 2^64503372 is an apocalyptic number.

It is an amenable number.

64503372 is an abundant number, since it is smaller than the sum of its proper divisors (94858404).

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

64503372 is a wasteful number, since it uses less digits than its factorization.

64503372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316217 (or 316215 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 64503372 is about 8031.3991309111. The cubic root of 64503372 is about 401.0459542321.

The spelling of 64503372 in words is "sixty-four million, five hundred three thousand, three hundred seventy-two".