66164026 has 16 divisors (see below), whose sum is σ = 100257696. Its totient is φ = 32746896.

The previous prime is 66164011. The next prime is 66164027. The reversal of 66164026 is 62046166.

It is not an unprimeable number, because it can be changed into a prime (66164027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120685 + ... + 121231.

It is an arithmetic number, because the mean of its divisors is an integer number (6266106).

Almost surely, 2^66164026 is an apocalyptic number.

66164026 is a deficient number, since it is larger than the sum of its proper divisors (34093670).

66164026 is a wasteful number, since it uses less digits than its factorization.

66164026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 66164026 is about 8134.1272426733. The cubic root of 66164026 is about 404.4585071445.

The spelling of 66164026 in words is "sixty-six million, one hundred sixty-four thousand, twenty-six".