66164492 has 6 divisors (see below), whose sum is σ = 115787868. Its totient is φ = 33082244.

The previous prime is 66164489. The next prime is 66164503. The reversal of 66164492 is 29446166.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8270558 + ... + 8270565.

It is an arithmetic number, because the mean of its divisors is an integer number (19297978).

Almost surely, 2^66164492 is an apocalyptic number.

It is an amenable number.

66164492 is a deficient number, since it is larger than the sum of its proper divisors (49623376).

66164492 is a wasteful number, since it uses less digits than its factorization.

66164492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16541127 (or 16541125 counting only the distinct ones).

The product of its digits is 62208, while the sum is 38.

The square root of 66164492 is about 8134.1558873678. The cubic root of 66164492 is about 404.4594566898.

The spelling of 66164492 in words is "sixty-six million, one hundred sixty-four thousand, four hundred ninety-two".