163679617 has 4 divisors (see below), whose sum is σ = 164510676. Its totient is φ = 162848560.

The previous prime is 163679609. The next prime is 163679627. The reversal of 163679617 is 716976361.

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

It can be written as a sum of positive squares in 2 ways, for example, as 109495296 + 54184321 = 10464^2 + 7361^2 .

It is a cyclic number.

It is not a de Polignac number, because 163679617 - 2³ = 163679609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163679627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415234 + ... + 415627.

It is an arithmetic number, because the mean of its divisors is an integer number (41127669).

Almost surely, 2^163679617 is an apocalyptic number.

It is an amenable number.

163679617 is a deficient number, since it is larger than the sum of its proper divisors (831059).

163679617 is an equidigital number, since it uses as much as digits as its factorization.

163679617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831058.

The product of its digits is 285768, while the sum is 46.

The square root of 163679617 is about 12793.7335051188. The cubic root of 163679617 is about 547.0136957692.

The spelling of 163679617 in words is "one hundred sixty-three million, six hundred seventy-nine thousand, six hundred seventeen".