166479967 has 4 divisors (see below), whose sum is σ = 170540496. Its totient is φ = 162419440.

The previous prime is 166479959. The next prime is 166479977. The reversal of 166479967 is 769974661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 166479967 - 2³ = 166479959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166479947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2030203 + ... + 2030284.

It is an arithmetic number, because the mean of its divisors is an integer number (42635124).

Almost surely, 2^166479967 is an apocalyptic number.

166479967 is a deficient number, since it is larger than the sum of its proper divisors (4060529).

166479967 is an equidigital number, since it uses as much as digits as its factorization.

166479967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4060528.

The product of its digits is 3429216, while the sum is 55.

The square root of 166479967 is about 12902.7116142306. The cubic root of 166479967 is about 550.1156417994.

The spelling of 166479967 in words is "one hundred sixty-six million, four hundred seventy-nine thousand, nine hundred sixty-seven".