163345656 has 64 divisors (see below), whose sum is σ = 436471200. Its totient is φ = 50761728.

The previous prime is 163345649. The next prime is 163345657. The reversal of 163345656 is 656543361.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163345657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42636 + ... + 46308.

Almost surely, 2^163345656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163345656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218235600).

163345656 is an abundant number, since it is smaller than the sum of its proper divisors (273125544).

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

163345656 is a wasteful number, since it uses less digits than its factorization.

163345656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3808 (or 3804 counting only the distinct ones).

The product of its digits is 194400, while the sum is 39.

The square root of 163345656 is about 12780.6750995399. The cubic root of 163345656 is about 546.6414123438.

The spelling of 163345656 in words is "one hundred sixty-three million, three hundred forty-five thousand, six hundred fifty-six".