163680265 has 16 divisors (see below), whose sum is σ = 224687232. Its totient is φ = 112132224.

The previous prime is 163680239. The next prime is 163680277. The reversal of 163680265 is 562086361.

It is a cyclic number.

It is not a de Polignac number, because 163680265 - 2⁷ = 163680137 is a prime.

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, 61237 + ... + 63853.

It is an arithmetic number, because the mean of its divisors is an integer number (14042952).

Almost surely, 2^163680265 is an apocalyptic number.

It is an amenable number.

163680265 is a deficient number, since it is larger than the sum of its proper divisors (61006967).

163680265 is a wasteful number, since it uses less digits than its factorization.

163680265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4416.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 163680265 is about 12793.7588299921. The cubic root of 163680265 is about 547.0144176355.

The spelling of 163680265 in words is "one hundred sixty-three million, six hundred eighty thousand, two hundred sixty-five".