163361664 has 64 divisors (see below), whose sum is σ = 482154000. Its totient is φ = 54452736.

The previous prime is 163361641. The next prime is 163361683. The reversal of 163361664 is 466163361.

163361664 is a `hidden beast` number, since 1 + 6 + 33 + 616 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20179 + ... + 27090.

Almost surely, 2^163361664 is an apocalyptic number.

It is an amenable number.

163361664 is an abundant number, since it is smaller than the sum of its proper divisors (318792336).

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

163361664 is an equidigital number, since it uses as much as digits as its factorization.

163361664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47292 (or 47274 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 163361664 is about 12781.3013421952. The cubic root of 163361664 is about 546.6592688536.

It can be divided in two parts, 163361 and 664, that added together give a square (164025 = 405²).

The spelling of 163361664 in words is "one hundred sixty-three million, three hundred sixty-one thousand, six hundred sixty-four".