163572864 has 256 divisors, whose sum is σ = 555663360. Its totient is φ = 41472000.

The previous prime is 163572859. The next prime is 163572869. The reversal of 163572864 is 468275361.

It is an interprime number because it is at equal distance from previous prime (163572859) and next prime (163572869).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163572869) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1083189 + ... + 1083339.

It is an arithmetic number, because the mean of its divisors is an integer number (2170560).

Almost surely, 2^163572864 is an apocalyptic number.

163572864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163572864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277831680).

163572864 is an abundant number, since it is smaller than the sum of its proper divisors (392090496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163572864 is a wasteful number, since it uses less digits than its factorization.

163572864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219 (or 207 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 163572864 is about 12789.5607430435. The cubic root of 163572864 is about 546.8947478431.

The spelling of 163572864 in words is "one hundred sixty-three million, five hundred seventy-two thousand, eight hundred sixty-four".