65651264 has 28 divisors (see below), whose sum is σ = 148888704. Its totient is φ = 28136064.

The previous prime is 65651237. The next prime is 65651279. The reversal of 65651264 is 46215656.

It is a tau number, because it is divible by the number of its divisors (28).

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, 72824 + ... + 73719.

Almost surely, 2^65651264 is an apocalyptic number.

65651264 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

65651264 is an abundant number, since it is smaller than the sum of its proper divisors (83237440).

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

65651264 is a wasteful number, since it uses less digits than its factorization.

65651264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146562 (or 146552 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 65651264 is about 8102.5467601243. The cubic root of 65651264 is about 403.4109639673.

The spelling of 65651264 in words is "sixty-five million, six hundred fifty-one thousand, two hundred sixty-four".