74664013 has 6 divisors (see below), whose sum is σ = 75000714. Its totient is φ = 74328624.

The previous prime is 74664011. The next prime is 74664043. The reversal of 74664013 is 31046647.

It can be written as a sum of positive squares in 3 ways, for example, as 5391684 + 69272329 = 2322^2 + 8323^2 .

It is not a de Polignac number, because 74664013 - 2¹ = 74664011 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 (74664011) 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, 121495 + ... + 122107.

It is an arithmetic number, because the mean of its divisors is an integer number (12500119).

Almost surely, 2^74664013 is an apocalyptic number.

It is an amenable number.

74664013 is a deficient number, since it is larger than the sum of its proper divisors (336701).

74664013 is an frugal number, since it uses more digits than its factorization.

74664013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311 (or 962 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 74664013 is about 8640.8340453917. The cubic root of 74664013 is about 421.0856512391.

The spelling of 74664013 in words is "seventy-four million, six hundred sixty-four thousand, thirteen".