163320263 has 8 divisors (see below), whose sum is σ = 170602848. Its totient is φ = 156052864.

The previous prime is 163320247. The next prime is 163320271. The reversal of 163320263 is 362023361.

163320263 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 163320263 - 2⁴ = 163320247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163320203) 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, 21995 + ... + 28467.

It is an arithmetic number, because the mean of its divisors is an integer number (21325356).

Almost surely, 2^163320263 is an apocalyptic number.

163320263 is a deficient number, since it is larger than the sum of its proper divisors (7282585).

163320263 is a wasteful number, since it uses less digits than its factorization.

163320263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7593.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 163320263 is about 12779.6816470521. The cubic root of 163320263 is about 546.6130847162.

The spelling of 163320263 in words is "one hundred sixty-three million, three hundred twenty thousand, two hundred sixty-three".