66164051 has 8 divisors (see below), whose sum is σ = 72472320. Its totient is φ = 60124288.

The previous prime is 66164027. The next prime is 66164053. The reversal of 66164051 is 15046166.

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 66164051 - 2⁶ = 66163987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66164053) 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, 66611 + ... + 67596.

It is an arithmetic number, because the mean of its divisors is an integer number (9059040).

Almost surely, 2^66164051 is an apocalyptic number.

66164051 is a deficient number, since it is larger than the sum of its proper divisors (6308269).

66164051 is a wasteful number, since it uses less digits than its factorization.

66164051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134253.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 66164051 is about 8134.1287794084. The cubic root of 66164051 is about 404.4585580859.

The spelling of 66164051 in words is "sixty-six million, one hundred sixty-four thousand, fifty-one".