163608804 has 18 divisors (see below), whose sum is σ = 413566790. Its totient is φ = 54536256.

The previous prime is 163608803. The next prime is 163608811. The reversal of 163608804 is 408806361.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 158760000 + 4848804 = 12600^2 + 2202^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 4544689 = 163608804 / (1 + 6 + 3 + 6 + 0 + 8 + 8 + 0 + 4).

It is not an unprimeable number, because it can be changed into a prime (163608803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2272309 + ... + 2272380.

Almost surely, 2^163608804 is an apocalyptic number.

It is an amenable number.

163608804 is an abundant number, since it is smaller than the sum of its proper divisors (249957986).

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

163608804 is a wasteful number, since it uses less digits than its factorization.

163608804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4544699 (or 4544694 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 163608804 is about 12790.9657180371. The cubic root of 163608804 is about 546.9347992252.

The spelling of 163608804 in words is "one hundred sixty-three million, six hundred eight thousand, eight hundred four".