163664464 has 30 divisors (see below), whose sum is σ = 322500750. Its totient is φ = 80461440.

The previous prime is 163664453. The next prime is 163664489. The reversal of 163664464 is 464466361.

163664464 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 28174864 + 135489600 = 5308^2 + 11640^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58162 + ... + 60910.

It is an arithmetic number, because the mean of its divisors is an integer number (10750025).

Almost surely, 2^163664464 is an apocalyptic number.

It is an amenable number.

163664464 is a deficient number, since it is larger than the sum of its proper divisors (158836286).

163664464 is an equidigital number, since it uses as much as digits as its factorization.

163664464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2879 (or 2812 counting only the distinct ones).

The product of its digits is 248832, while the sum is 40.

The square root of 163664464 is about 12793.1412874243. The cubic root of 163664464 is about 546.9968149168.

The spelling of 163664464 in words is "one hundred sixty-three million, six hundred sixty-four thousand, four hundred sixty-four".