65912928 has 24 divisors (see below), whose sum is σ = 173021688. Its totient is φ = 21970944.

The previous prime is 65912909. The next prime is 65912933. The reversal of 65912928 is 82921956.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 65912928.

It is a congruent number.

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, 343201 + ... + 343392.

It is an arithmetic number, because the mean of its divisors is an integer number (7209237).

Almost surely, 2^65912928 is an apocalyptic number.

It is an amenable number.

65912928 is an abundant number, since it is smaller than the sum of its proper divisors (107108760).

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

65912928 is a wasteful number, since it uses less digits than its factorization.

65912928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686606 (or 686598 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 65912928 is about 8118.6777248515. The cubic root of 65912928 is about 403.9462072612.

Subtracting 65912928 from its reverse (82921956), we obtain a triangular number (17009028 = T₅₈₃₂).

The spelling of 65912928 in words is "sixty-five million, nine hundred twelve thousand, nine hundred twenty-eight".