668179 has 2 divisors, whose sum is σ = 668180. Its totient is φ = 668178.

The previous prime is 668159. The next prime is 668201. The reversal of 668179 is 971866.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 668179 - 2⁷ = 668051 is a prime.

It is not a weakly prime, because it can be changed into another prime (668159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334089 + 334090.

It is an arithmetic number, because the mean of its divisors is an integer number (334090).

2⁶⁶⁸¹⁷⁹ is an apocalyptic number.

668179 is a deficient number, since it is larger than the sum of its proper divisors (1).

668179 is an equidigital number, since it uses as much as digits as its factorization.

668179 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 37.

The square root of 668179 is about 817.4221675487. The cubic root of 668179 is about 87.4240538290.

The spelling of 668179 in words is "six hundred sixty-eight thousand, one hundred seventy-nine".