163222656 has 32 divisors (see below), whose sum is σ = 433561200. Its totient is φ = 54407424.

The previous prime is 163222649. The next prime is 163222667. The reversal of 163222656 is 656222361.

It is a tau number, because it is divible by the number of its divisors (32).

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 3 ways as a sum of consecutive naturals, for example, 212146 + ... + 212913.

Almost surely, 2^163222656 is an apocalyptic number.

163222656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

163222656 is an abundant number, since it is smaller than the sum of its proper divisors (270338544).

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

163222656 is an equidigital number, since it uses as much as digits as its factorization.

163222656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425076 (or 425064 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 163222656 is about 12775.8622409605. The cubic root of 163222656 is about 546.5041700912.

It can be divided in two parts, 163222 and 656, that added together give a triangular number (163878 = T₅₇₂).

The spelling of 163222656 in words is "one hundred sixty-three million, two hundred twenty-two thousand, six hundred fifty-six".