666674594923 has 2 divisors, whose sum is σ = 666674594924. Its totient is φ = 666674594922.

The previous prime is 666674594899. The next prime is 666674594951. The reversal of 666674594923 is 329495476666.

666674594923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 666674594923 - 2²⁵ = 666641040491 is a prime.

It is a super-2 number, since 2×666674594923² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (666674594953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333337297461 + 333337297462.

It is an arithmetic number, because the mean of its divisors is an integer number (333337297462).

Almost surely, 2^666674594923 is an apocalyptic number.

666674594923 is a deficient number, since it is larger than the sum of its proper divisors (1).

666674594923 is an equidigital number, since it uses as much as digits as its factorization.

666674594923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 352719360, while the sum is 67.

The spelling of 666674594923 in words is "six hundred sixty-six billion, six hundred seventy-four million, five hundred ninety-four thousand, nine hundred twenty-three".