163243664 has 10 divisors (see below), whose sum is σ = 316284630. Its totient is φ = 81621824.

The previous prime is 163243651. The next prime is 163243681. The reversal of 163243664 is 466342361.

163243664 is digitally balanced in base 2, 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 only one way, i.e., 123654400 + 39589264 = 11120^2 + 6292^2 .

It is a super-2 number, since 2×163243664² = 53296987672289792, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101349 + ... + 5101380.

It is an arithmetic number, because the mean of its divisors is an integer number (31628463).

Almost surely, 2^163243664 is an apocalyptic number.

It is an amenable number.

163243664 is a deficient number, since it is larger than the sum of its proper divisors (153040966).

163243664 is a wasteful number, since it uses less digits than its factorization.

163243664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10202737 (or 10202731 counting only the distinct ones).

The product of its digits is 62208, while the sum is 35.

The square root of 163243664 is about 12776.6843899347. The cubic root of 163243664 is about 546.5276155029.

The spelling of 163243664 in words is "one hundred sixty-three million, two hundred forty-three thousand, six hundred sixty-four".