66164263 has 8 divisors (see below), whose sum is σ = 72239616. Its totient is φ = 60099000.

The previous prime is 66164257. The next prime is 66164269. The reversal of 66164263 is 36246166.

It is an interprime number because it is at equal distance from previous prime (66164257) and next prime (66164269).

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 66164263 - 2⁹ = 66163751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66164269) 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, 19920 + ... + 23002.

It is an arithmetic number, because the mean of its divisors is an integer number (9029952).

Almost surely, 2^66164263 is an apocalyptic number.

66164263 is a deficient number, since it is larger than the sum of its proper divisors (6075353).

66164263 is a wasteful number, since it uses less digits than its factorization.

66164263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5045.

The product of its digits is 31104, while the sum is 34.

The square root of 66164263 is about 8134.1418109104. The cubic root of 66164263 is about 404.4589900683.

The spelling of 66164263 in words is "sixty-six million, one hundred sixty-four thousand, two hundred sixty-three".