65121164 has 24 divisors (see below), whose sum is σ = 115668000. Its totient is φ = 32076800.

The previous prime is 65121157. The next prime is 65121181. The reversal of 65121164 is 46112156.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144812 + ... + 145260.

It is an arithmetic number, because the mean of its divisors is an integer number (4819500).

Almost surely, 2^65121164 is an apocalyptic number.

It is an amenable number.

65121164 is a deficient number, since it is larger than the sum of its proper divisors (50546836).

65121164 is a wasteful number, since it uses less digits than its factorization.

65121164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913 (or 911 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

The square root of 65121164 is about 8069.7685220829. The cubic root of 65121164 is about 402.3222501285.

The spelling of 65121164 in words is "sixty-five million, one hundred twenty-one thousand, one hundred sixty-four".