163672656 has 120 divisors (see below), whose sum is σ = 499593024. Its totient is φ = 45204480.

The previous prime is 163672637. The next prime is 163672673. The reversal of 163672656 is 656276361.

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

Its product of digits (272160) is a multiple of the sum of its prime divisors (162).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1501530 + ... + 1501638.

Almost surely, 2^163672656 is an apocalyptic number.

163672656 is a gapful number since it is divisible by the number (16) 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 163672656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249796512).

163672656 is an abundant number, since it is smaller than the sum of its proper divisors (335920368).

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

163672656 is a wasteful number, since it uses less digits than its factorization.

163672656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277 (or 162 counting only the distinct ones).

The product of its digits is 272160, while the sum is 42.

The square root of 163672656 is about 12793.4614549777. The cubic root of 163672656 is about 547.0059411560.

The spelling of 163672656 in words is "one hundred sixty-three million, six hundred seventy-two thousand, six hundred fifty-six".