64464560 has 20 divisors (see below), whose sum is σ = 149880288. Its totient is φ = 25785792.

The previous prime is 64464539. The next prime is 64464571. The reversal of 64464560 is 6546446.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 64464560.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402824 + ... + 402983.

Almost surely, 2^64464560 is an apocalyptic number.

It is an amenable number.

64464560 is an abundant number, since it is smaller than the sum of its proper divisors (85415728).

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

64464560 is a wasteful number, since it uses less digits than its factorization.

64464560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805820 (or 805814 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 64464560 is about 8028.9825009150. The cubic root of 64464560 is about 400.9655009779.

The spelling of 64464560 in words is "sixty-four million, four hundred sixty-four thousand, five hundred sixty".