163566656 has 112 divisors (see below), whose sum is σ = 381853440. Its totient is φ = 68689920.

The previous prime is 163566643. The next prime is 163566679. The reversal of 163566656 is 656665361.

163566656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 945386 + ... + 945558.

Almost surely, 2^163566656 is an apocalyptic number.

163566656 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 163566656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190926720).

163566656 is an abundant number, since it is smaller than the sum of its proper divisors (218286784).

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

163566656 is a wasteful number, since it uses less digits than its factorization.

163566656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292 (or 282 counting only the distinct ones).

The product of its digits is 583200, while the sum is 44.

The square root of 163566656 is about 12789.3180428043. The cubic root of 163566656 is about 546.8878290803.

The spelling of 163566656 in words is "one hundred sixty-three million, five hundred sixty-six thousand, six hundred fifty-six".