66164464 has 10 divisors (see below), whose sum is σ = 128193680. Its totient is φ = 33082224.

The previous prime is 66164437. The next prime is 66164489. The reversal of 66164464 is 46446166.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2067624 + ... + 2067655.

It is an arithmetic number, because the mean of its divisors is an integer number (12819368).

Almost surely, 2^66164464 is an apocalyptic number.

It is an amenable number.

66164464 is a deficient number, since it is larger than the sum of its proper divisors (62029216).

66164464 is a wasteful number, since it uses less digits than its factorization.

66164464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4135287 (or 4135281 counting only the distinct ones).

The product of its digits is 82944, while the sum is 37.

The square root of 66164464 is about 8134.1541662302. The cubic root of 66164464 is about 404.4593996357.

The spelling of 66164464 in words is "sixty-six million, one hundred sixty-four thousand, four hundred sixty-four".