66164023 has 8 divisors (see below), whose sum is σ = 70052400. Its totient is φ = 62316288.

The previous prime is 66164011. The next prime is 66164027. The reversal of 66164023 is 32046166.

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 66164023 - 2¹⁷ = 66032951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66163982 and 66164000.

It is a congruent number.

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, 6778 + ... + 13351.

It is an arithmetic number, because the mean of its divisors is an integer number (8756550).

Almost surely, 2^66164023 is an apocalyptic number.

66164023 is a deficient number, since it is larger than the sum of its proper divisors (3888377).

66164023 is a wasteful number, since it uses less digits than its factorization.

66164023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20321.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 66164023 is about 8134.1270582651. The cubic root of 66164023 is about 404.4585010316.

The spelling of 66164023 in words is "sixty-six million, one hundred sixty-four thousand, twenty-three".