65610664 has 16 divisors (see below), whose sum is σ = 140594400. Its totient is φ = 28118832.

The previous prime is 65610631. The next prime is 65610683. The reversal of 65610664 is 46601656.

65610664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 585754 + ... + 585865.

It is an arithmetic number, because the mean of its divisors is an integer number (8787150).

Almost surely, 2^65610664 is an apocalyptic number.

It is an amenable number.

65610664 is an abundant number, since it is smaller than the sum of its proper divisors (74983736).

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

65610664 is a wasteful number, since it uses less digits than its factorization.

65610664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171632 (or 1171628 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 65610664 is about 8100.0409875506. The cubic root of 65610664 is about 403.3277877950.

The spelling of 65610664 in words is "sixty-five million, six hundred ten thousand, six hundred sixty-four".