64531308 has 24 divisors (see below), whose sum is σ = 152481280. Its totient is φ = 21237840.

The previous prime is 64531297. The next prime is 64531331. The reversal of 64531308 is 80313546.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33088 + ... + 34983.

Almost surely, 2^64531308 is an apocalyptic number.

It is an amenable number.

64531308 is an abundant number, since it is smaller than the sum of its proper divisors (87949972).

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

64531308 is a wasteful number, since it uses less digits than its factorization.

64531308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68157 (or 68155 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 64531308 is about 8033.1381165769. The cubic root of 64531308 is about 401.1038426929.

The spelling of 64531308 in words is "sixty-four million, five hundred thirty-one thousand, three hundred eight".