22997 has 8 divisors (see below), whose sum is σ = 26040. Its totient is φ = 20160.

The previous prime is 22993. The next prime is 23003. The reversal of 22997 is 79922.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 196 + 22801 = 14^2 + 151^2 .

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 22997 - 2² = 22993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22993) 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, 347 + ... + 407.

It is an arithmetic number, because the mean of its divisors is an integer number (3255).

2²²⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

22997 is a deficient number, since it is larger than the sum of its proper divisors (3043).

22997 is a wasteful number, since it uses less digits than its factorization.

22997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103.

The product of its digits is 2268, while the sum is 29.

The square root of 22997 is about 151.6476178514. The cubic root of 22997 is about 28.4374332808.

The spelling of 22997 in words is "twenty-two thousand, nine hundred ninety-seven".