65604028 has 12 divisors (see below), whose sum is σ = 131208112. Its totient is φ = 28116000.

The previous prime is 65604023. The next prime is 65604031. The reversal of 65604028 is 82040656.

65604028 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65604023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1171473 + ... + 1171528.

Almost surely, 2^65604028 is an apocalyptic number.

It is an amenable number.

65604028 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

65604028 is a wasteful number, since it uses less digits than its factorization.

65604028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2343012 (or 2343010 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 65604028 is about 8099.6313496356. The cubic root of 65604028 is about 403.3141895307.

The spelling of 65604028 in words is "sixty-five million, six hundred four thousand, twenty-eight".