65386664 has 32 divisors (see below), whose sum is σ = 140849280. Its totient is φ = 27875904.

The previous prime is 65386627. The next prime is 65386667. The reversal of 65386664 is 46668356.

It is not an unprimeable number, because it can be changed into a prime (65386667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8069 + ... + 13995.

It is an arithmetic number, because the mean of its divisors is an integer number (4401540).

Almost surely, 2^65386664 is an apocalyptic number.

It is an amenable number.

65386664 is an abundant number, since it is smaller than the sum of its proper divisors (75462616).

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

65386664 is a wasteful number, since it uses less digits than its factorization.

65386664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6137 (or 6133 counting only the distinct ones).

The product of its digits is 622080, while the sum is 44.

The square root of 65386664 is about 8086.2020751401. The cubic root of 65386664 is about 402.8682667868.

The spelling of 65386664 in words is "sixty-five million, three hundred eighty-six thousand, six hundred sixty-four".