66164907 has 8 divisors (see below), whose sum is σ = 88564176. Its totient is φ = 43937792.

The previous prime is 66164873. The next prime is 66164909. The reversal of 66164907 is 70946166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66164907 - 2⁷ = 66164779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66164909) 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, 42138 + ... + 43679.

It is an arithmetic number, because the mean of its divisors is an integer number (11070522).

Almost surely, 2^66164907 is an apocalyptic number.

66164907 is a deficient number, since it is larger than the sum of its proper divisors (22399269).

66164907 is a wasteful number, since it uses less digits than its factorization.

66164907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86077.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 66164907 is about 8134.1813970430. The cubic root of 66164907 is about 404.4603023112.

The spelling of 66164907 in words is "sixty-six million, one hundred sixty-four thousand, nine hundred seven".