665160079 has 2 divisors, whose sum is σ = 665160080. Its totient is φ = 665160078.

The previous prime is 665160029. The next prime is 665160127. The reversal of 665160079 is 970061566.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 665160079 - 2⁷ = 665159951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (665160029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332580039 + 332580040.

It is an arithmetic number, because the mean of its divisors is an integer number (332580040).

Almost surely, 2^665160079 is an apocalyptic number.

665160079 is a deficient number, since it is larger than the sum of its proper divisors (1).

665160079 is an equidigital number, since it uses as much as digits as its factorization.

665160079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 665160079 is about 25790.6975283725. The cubic root of 665160079 is about 872.9219056214.

The spelling of 665160079 in words is "six hundred sixty-five million, one hundred sixty thousand, seventy-nine".