66750164 has 24 divisors (see below), whose sum is σ = 126067200. Its totient is φ = 30741984.

The previous prime is 66750139. The next prime is 66750179. The reversal of 66750164 is 46105766.

It is a congruent number.

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, 30077 + ... + 32219.

It is an arithmetic number, because the mean of its divisors is an integer number (5252800).

Almost surely, 2^66750164 is an apocalyptic number.

It is an amenable number.

66750164 is a deficient number, since it is larger than the sum of its proper divisors (59317036).

66750164 is a wasteful number, since it uses less digits than its factorization.

66750164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2759 (or 2757 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 66750164 is about 8170.0773558149. The cubic root of 66750164 is about 405.6493449633.

The spelling of 66750164 in words is "sixty-six million, seven hundred fifty thousand, one hundred sixty-four".