64732530 has 32 divisors (see below), whose sum is σ = 157235904. Its totient is φ = 17053376.

The previous prime is 64732523. The next prime is 64732559. The reversal of 64732530 is 3523746.

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

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, 10509 + ... + 15488.

It is an arithmetic number, because the mean of its divisors is an integer number (4913622).

Almost surely, 2^64732530 is an apocalyptic number.

64732530 is an abundant number, since it is smaller than the sum of its proper divisors (92503374).

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

64732530 is a wasteful number, since it uses less digits than its factorization.

64732530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26090.

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 64732530 is about 8045.6528635034. The cubic root of 64732530 is about 401.5203184255.

The spelling of 64732530 in words is "sixty-four million, seven hundred thirty-two thousand, five hundred thirty".