64879590 has 32 divisors (see below), whose sum is σ = 160736256. Its totient is φ = 16742880.

The previous prime is 64879571. The next prime is 64879603. The reversal of 64879590 is 9597846.

It is a super-2 number, since 2×64879590² = 8418722397136200, which contains 22 as substring.

It is a congruent number.

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, 33952 + ... + 35811.

It is an arithmetic number, because the mean of its divisors is an integer number (5023008).

Almost surely, 2^64879590 is an apocalyptic number.

64879590 is an abundant number, since it is smaller than the sum of its proper divisors (95856666).

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

64879590 is a wasteful number, since it uses less digits than its factorization.

64879590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69804.

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 64879590 is about 8054.7867755764. The cubic root of 64879590 is about 401.8241477337.

The spelling of 64879590 in words is "sixty-four million, eight hundred seventy-nine thousand, five hundred ninety".