168474621 has 16 divisors (see below), whose sum is σ = 258163200. Its totient is φ = 95731248.

The previous prime is 168474589. The next prime is 168474623. The reversal of 168474621 is 126474861.

It is not a de Polignac number, because 168474621 - 2⁵ = 168474589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 168474621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168474623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18651 + ... + 26168.

It is an arithmetic number, because the mean of its divisors is an integer number (16135200).

Almost surely, 2^168474621 is an apocalyptic number.

It is an amenable number.

168474621 is a deficient number, since it is larger than the sum of its proper divisors (89688579).

168474621 is a wasteful number, since it uses less digits than its factorization.

168474621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45008.

The product of its digits is 64512, while the sum is 39.

The square root of 168474621 is about 12979.7773863807. Note that the first 3 decimals coincide. The cubic root of 168474621 is about 552.3039670895.

The spelling of 168474621 in words is "one hundred sixty-eight million, four hundred seventy-four thousand, six hundred twenty-one".