64624560 has 320 divisors, whose sum is σ = 269982720. Its totient is φ = 12349440.

The previous prime is 64624541. The next prime is 64624583. The reversal of 64624560 is 6542646.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 240106 + ... + 240374.

It is an arithmetic number, because the mean of its divisors is an integer number (843696).

Almost surely, 2^64624560 is an apocalyptic number.

64624560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64624560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134991360).

64624560 is an abundant number, since it is smaller than the sum of its proper divisors (205358160).

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

64624560 is a wasteful number, since it uses less digits than its factorization.

64624560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 64624560 is about 8038.9402286620. The cubic root of 64624560 is about 401.2969568788.

The spelling of 64624560 in words is "sixty-four million, six hundred twenty-four thousand, five hundred sixty".