30645664 has 24 divisors (see below), whose sum is σ = 68953248. Its totient is φ = 13133760.

The previous prime is 30645649. The next prime is 30645673. The reversal of 30645664 is 46654603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68182 + ... + 68629.

It is an arithmetic number, because the mean of its divisors is an integer number (2873052).

Almost surely, 2^30645664 is an apocalyptic number.

It is an amenable number.

30645664 is an abundant number, since it is smaller than the sum of its proper divisors (38307584).

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

30645664 is a wasteful number, since it uses less digits than its factorization.

30645664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136828 (or 136820 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 30645664 is about 5535.8525991937. The cubic root of 30645664 is about 312.9365895492.

The spelling of 30645664 in words is "thirty million, six hundred forty-five thousand, six hundred sixty-four".