65645164 has 24 divisors (see below), whose sum is σ = 126055440. Its totient is φ = 29724864.

The previous prime is 65645159. The next prime is 65645189. The reversal of 65645164 is 46154656.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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, 9154 + ... + 14665.

It is an arithmetic number, because the mean of its divisors is an integer number (5252310).

Almost surely, 2^65645164 is an apocalyptic number.

It is an amenable number.

65645164 is a deficient number, since it is larger than the sum of its proper divisors (60410276).

65645164 is a wasteful number, since it uses less digits than its factorization.

65645164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23889 (or 23887 counting only the distinct ones).

The product of its digits is 86400, while the sum is 37.

The square root of 65645164 is about 8102.1703265236. The cubic root of 65645164 is about 403.3984692442.

The spelling of 65645164 in words is "sixty-five million, six hundred forty-five thousand, one hundred sixty-four".