64805900 has 18 divisors (see below), whose sum is σ = 140629020. Its totient is φ = 25922320.

The previous prime is 64805899. The next prime is 64805947. The reversal of 64805900 is 950846.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 323930 + ... + 324129.

Almost surely, 2^64805900 is an apocalyptic number.

It is an amenable number.

64805900 is an abundant number, since it is smaller than the sum of its proper divisors (75823120).

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

64805900 is a wasteful number, since it uses less digits than its factorization.

64805900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648073 (or 648066 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 64805900 is about 8050.2111773543. The cubic root of 64805900 is about 401.6719599707.

The spelling of 64805900 in words is "sixty-four million, eight hundred five thousand, nine hundred".