666113579 has 2 divisors, whose sum is σ = 666113580. Its totient is φ = 666113578.

The previous prime is 666113573. The next prime is 666113621. The reversal of 666113579 is 975311666.

666113579 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 666113579 - 2²⁸ = 397678123 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (666113573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333056789 + 333056790.

It is an arithmetic number, because the mean of its divisors is an integer number (333056790).

Almost surely, 2^666113579 is an apocalyptic number.

666113579 is a deficient number, since it is larger than the sum of its proper divisors (1).

666113579 is an equidigital number, since it uses as much as digits as its factorization.

666113579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 44.

The square root of 666113579 is about 25809.1762557428. The cubic root of 666113579 is about 873.3388146067.

The spelling of 666113579 in words is "six hundred sixty-six million, one hundred thirteen thousand, five hundred seventy-nine".