84905664 has 28 divisors (see below), whose sum is σ = 224646744. Its totient is φ = 28301824.

The previous prime is 84905657. The next prime is 84905747. The reversal of 84905664 is 46650948.

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, 220917 + ... + 221300.

It is an arithmetic number, because the mean of its divisors is an integer number (8023098).

Almost surely, 2^84905664 is an apocalyptic number.

It is an amenable number.

84905664 is an abundant number, since it is smaller than the sum of its proper divisors (139741080).

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

84905664 is a wasteful number, since it uses less digits than its factorization.

84905664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442232 (or 442222 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 84905664 is about 9214.4269490837. The cubic root of 84905664 is about 439.5202484455.

The spelling of 84905664 in words is "eighty-four million, nine hundred five thousand, six hundred sixty-four".