66164113 has 6 divisors (see below), whose sum is σ = 66923894. Its totient is φ = 65412864.

The previous prime is 66164107. The next prime is 66164141. The reversal of 66164113 is 31146166.

It can be written as a sum of positive squares in 3 ways, for example, as 1329409 + 64834704 = 1153^2 + 8052^2 .

It is not a de Polignac number, because 66164113 - 2⁵ = 66164081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66164183) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3745 + ... + 12097.

Almost surely, 2^66164113 is an apocalyptic number.

It is an amenable number.

66164113 is a deficient number, since it is larger than the sum of its proper divisors (759781).

66164113 is an frugal number, since it uses more digits than its factorization.

66164113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8531 (or 8442 counting only the distinct ones).

The product of its digits is 2592, while the sum is 28.

The square root of 66164113 is about 8134.1325905102. The cubic root of 66164113 is about 404.4586844205.

The spelling of 66164113 in words is "sixty-six million, one hundred sixty-four thousand, one hundred thirteen".