170979967 has 2 divisors, whose sum is σ = 170979968. Its totient is φ = 170979966.

The previous prime is 170979959. The next prime is 170980001. The reversal of 170979967 is 769979071.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 170979967 - 2³ = 170979959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (170979667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85489983 + 85489984.

It is an arithmetic number, because the mean of its divisors is an integer number (85489984).

Almost surely, 2^170979967 is an apocalyptic number.

170979967 is a deficient number, since it is larger than the sum of its proper divisors (1).

170979967 is an equidigital number, since it uses as much as digits as its factorization.

170979967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1500282, while the sum is 55.

The square root of 170979967 is about 13075.9308272872. The cubic root of 170979967 is about 555.0282343670.

The spelling of 170979967 in words is "one hundred seventy million, nine hundred seventy-nine thousand, nine hundred sixty-seven".