64624530 has 32 divisors (see below), whose sum is σ = 158402304. Its totient is φ = 16866176.

The previous prime is 64624523. The next prime is 64624537. The reversal of 64624530 is 3542646.

It is an interprime number because it is at equal distance from previous prime (64624523) and next prime (64624537).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (64624537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21507 + ... + 24326.

It is an arithmetic number, because the mean of its divisors is an integer number (4950072).

Almost surely, 2^64624530 is an apocalyptic number.

64624530 is an abundant number, since it is smaller than the sum of its proper divisors (93777774).

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

64624530 is a wasteful number, since it uses less digits than its factorization.

64624530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45890.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 64624530 is about 8038.9383627442. The cubic root of 64624530 is about 401.2968947821.

The spelling of 64624530 in words is "sixty-four million, six hundred twenty-four thousand, five hundred thirty".