666331713 has 24 divisors (see below), whose sum is σ = 987831936. Its totient is φ = 432561600.

The previous prime is 666331709. The next prime is 666331723. The reversal of 666331713 is 317133666.

It is not a de Polignac number, because 666331713 - 2² = 666331709 is a prime.

It is not an unprimeable number, because it can be changed into a prime (666331723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 237348 + ... + 240138.

It is an arithmetic number, because the mean of its divisors is an integer number (41159664).

Almost surely, 2^666331713 is an apocalyptic number.

It is an amenable number.

666331713 is a deficient number, since it is larger than the sum of its proper divisors (321500223).

666331713 is a wasteful number, since it uses less digits than its factorization.

666331713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3485 (or 3482 counting only the distinct ones).

The product of its digits is 40824, while the sum is 36.

The square root of 666331713 is about 25813.4018099126. The cubic root of 666331713 is about 873.4341357369.

The spelling of 666331713 in words is "six hundred sixty-six million, three hundred thirty-one thousand, seven hundred thirteen".