666079 has 2 divisors, whose sum is σ = 666080. Its totient is φ = 666078.

The previous prime is 666073. The next prime is 666089. The reversal of 666079 is 970666.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-666079 is a prime.

It is a super-2 number, since 2×666079² = 887322468482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (666073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333039 + 333040.

It is an arithmetic number, because the mean of its divisors is an integer number (333040).

2⁶⁶⁶⁰⁷⁹ is an apocalyptic number.

666079 is a deficient number, since it is larger than the sum of its proper divisors (1).

666079 is an equidigital number, since it uses as much as digits as its factorization.

666079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 666079 is about 816.1366307182. The cubic root of 666079 is about 87.3323702216.

The spelling of 666079 in words is "six hundred sixty-six thousand, seventy-nine".