65033664 has 28 divisors (see below), whose sum is σ = 172068744. Its totient is φ = 21677824.

The previous prime is 65033659. The next prime is 65033671. The reversal of 65033664 is 46633056.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169167 + ... + 169550.

Almost surely, 2^65033664 is an apocalyptic number.

65033664 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

65033664 is an abundant number, since it is smaller than the sum of its proper divisors (107035080).

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

65033664 is a wasteful number, since it uses less digits than its factorization.

65033664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338732 (or 338722 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 33.

The square root of 65033664 is about 8064.3452307053. The cubic root of 65033664 is about 402.1419760393.

The spelling of 65033664 in words is "sixty-five million, thirty-three thousand, six hundred sixty-four".