64582890 has 32 divisors (see below), whose sum is σ = 156378816. Its totient is φ = 17068800.

The previous prime is 64582883. The next prime is 64582901. The reversal of 64582890 is 9828546.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6136 + ... + 12915.

It is an arithmetic number, because the mean of its divisors is an integer number (4886838).

Almost surely, 2^64582890 is an apocalyptic number.

64582890 is an abundant number, since it is smaller than the sum of its proper divisors (91795926).

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

64582890 is a wasteful number, since it uses less digits than its factorization.

64582890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19174.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 64582890 is about 8036.3480511984. The cubic root of 64582890 is about 401.2106860677.

The spelling of 64582890 in words is "sixty-four million, five hundred eighty-two thousand, eight hundred ninety".