65211264 has 64 divisors (see below), whose sum is σ = 192474000. Its totient is φ = 21735936.

The previous prime is 65211239. The next prime is 65211271. The reversal of 65211264 is 46211256.

65211264 is a `hidden beast` number, since 652 + 1 + 1 + 2 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (27).

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 7 ways as a sum of consecutive naturals, for example, 5979 + ... + 12890.

Almost surely, 2^65211264 is an apocalyptic number.

65211264 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

65211264 is an abundant number, since it is smaller than the sum of its proper divisors (127262736).

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

65211264 is a wasteful number, since it uses less digits than its factorization.

65211264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18892 (or 18874 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 65211264 is about 8075.3491565381. The cubic root of 65211264 is about 402.5077122604.

The spelling of 65211264 in words is "sixty-five million, two hundred eleven thousand, two hundred sixty-four".