666490064713 has 12 divisors (see below), whose sum is σ = 732761963584. Its totient is φ = 605756388600.

The previous prime is 666490064711. The next prime is 666490064729. The reversal of 666490064713 is 317460094666.

It is not a de Polignac number, because 666490064713 - 2¹ = 666490064711 is a prime.

It is a super-2 number, since 2×666490064713² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666490064711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138981 + ... + 1162882.

Almost surely, 2^666490064713 is an apocalyptic number.

It is an amenable number.

666490064713 is a deficient number, since it is larger than the sum of its proper divisors (66271898871).

666490064713 is a wasteful number, since it uses less digits than its factorization.

666490064713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306116 (or 1306105 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 52.

The spelling of 666490064713 in words is "six hundred sixty-six billion, four hundred ninety million, sixty-four thousand, seven hundred thirteen".