163699872 has 192 divisors, whose sum is σ = 515579904. Its totient is φ = 44513280.

The previous prime is 163699859. The next prime is 163699873. The reversal of 163699872 is 278996361.

It is not an unprimeable number, because it can be changed into a prime (163699873) 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, 2242428 + ... + 2242500.

It is an arithmetic number, because the mean of its divisors is an integer number (2685312).

Almost surely, 2^163699872 is an apocalyptic number.

163699872 is a gapful number since it is divisible by the number (12) 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 163699872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257789952).

163699872 is an abundant number, since it is smaller than the sum of its proper divisors (351880032).

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

163699872 is a wasteful number, since it uses less digits than its factorization.

163699872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211 (or 203 counting only the distinct ones).

The product of its digits is 979776, while the sum is 51.

The square root of 163699872 is about 12794.5250791110. The cubic root of 163699872 is about 547.0362587606.

The spelling of 163699872 in words is "one hundred sixty-three million, six hundred ninety-nine thousand, eight hundred seventy-two".