65355664 has 20 divisors (see below), whose sum is σ = 138138480. Its totient is φ = 29707040.

The previous prime is 65355629. The next prime is 65355671. The reversal of 65355664 is 46655356.

It is a happy 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, 185494 + ... + 185845.

It is an arithmetic number, because the mean of its divisors is an integer number (6906924).

Almost surely, 2^65355664 is an apocalyptic number.

It is an amenable number.

65355664 is an abundant number, since it is smaller than the sum of its proper divisors (72782816).

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

65355664 is a wasteful number, since it uses less digits than its factorization.

65355664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371358 (or 371352 counting only the distinct ones).

The product of its digits is 324000, while the sum is 40.

The square root of 65355664 is about 8084.2850023982. The cubic root of 65355664 is about 402.8045897325.

The spelling of 65355664 in words is "sixty-five million, three hundred fifty-five thousand, six hundred sixty-four".