163563265 has 8 divisors (see below), whose sum is σ = 199493928. Its totient is φ = 128705280.

The previous prime is 163563251. The next prime is 163563269. The reversal of 163563265 is 562365361.

It can be written as a sum of positive squares in 4 ways, for example, as 13549761 + 150013504 = 3681^2 + 12248^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 163563265 - 2⁹ = 163562753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163563269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267832 + ... + 268441.

It is an arithmetic number, because the mean of its divisors is an integer number (24936741).

Almost surely, 2^163563265 is an apocalyptic number.

It is an amenable number.

163563265 is a deficient number, since it is larger than the sum of its proper divisors (35930663).

163563265 is an equidigital number, since it uses as much as digits as its factorization.

163563265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536339.

The product of its digits is 97200, while the sum is 37.

The square root of 163563265 is about 12789.1854705450. The cubic root of 163563265 is about 546.8840497659.

The spelling of 163563265 in words is "one hundred sixty-three million, five hundred sixty-three thousand, two hundred sixty-five".