163320 has 32 divisors (see below), whose sum is σ = 490320. Its totient is φ = 43520.

The previous prime is 163309. The next prime is 163321. The reversal of 163320 is 23361.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 163320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163321) 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, 561 + ... + 800.

2¹⁶³³²⁰ is an apocalyptic number.

163320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163320 is an abundant number, since it is smaller than the sum of its proper divisors (327000).

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

163320 is a wasteful number, since it uses less digits than its factorization.

163320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375 (or 1371 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 163320 is about 404.1286923741. The cubic root of 163320 is about 54.6612791306.

Adding to 163320 its reverse (23361), we get a palindrome (186681).

It can be divided in two parts, 1633 and 20, that added together give a triangular number (1653 = T₅₇).

The spelling of 163320 in words is "one hundred sixty-three thousand, three hundred twenty".