64372900 has 18 divisors (see below), whose sum is σ = 139689410. Its totient is φ = 25749120.

The previous prime is 64372879. The next prime is 64372907. The reversal of 64372900 is 927346.

It can be written as a sum of positive squares in 3 ways, for example, as 9375844 + 54997056 = 3062^2 + 7416^2 .

It is not an unprimeable number, because it can be changed into a prime (64372907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 321765 + ... + 321964.

Almost surely, 2^64372900 is an apocalyptic number.

It is an amenable number.

64372900 is an abundant number, since it is smaller than the sum of its proper divisors (75316510).

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

64372900 is a wasteful number, since it uses less digits than its factorization.

64372900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643743 (or 643736 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 64372900 is about 8023.2723997132. The cubic root of 64372900 is about 400.7753710283.

The spelling of 64372900 in words is "sixty-four million, three hundred seventy-two thousand, nine hundred".