66164207 has 8 divisors (see below), whose sum is σ = 67237584. Its totient is φ = 65095488.

The previous prime is 66164183. The next prime is 66164239. The reversal of 66164207 is 70246166.

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 66164207 - 2¹⁶ = 66098671 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 (66164257) 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, 37313 + ... + 39045.

It is an arithmetic number, because the mean of its divisors is an integer number (8404698).

Almost surely, 2^66164207 is an apocalyptic number.

66164207 is a deficient number, since it is larger than the sum of its proper divisors (1073377).

66164207 is a wasteful number, since it uses less digits than its factorization.

66164207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2329.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 66164207 is about 8134.1383686288. The cubic root of 66164207 is about 404.4588759599.

The spelling of 66164207 in words is "sixty-six million, one hundred sixty-four thousand, two hundred seven".