22687 has 6 divisors (see below), whose sum is σ = 26448. Its totient is φ = 19404.

The previous prime is 22679. The next prime is 22691. The reversal of 22687 is 78622.

It is not a de Polignac number, because 22687 - 2³ = 22679 is a prime.

It is a Duffinian number.

22687 is a lucky number.

It is a plaindrome in base 12 and base 16.

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 (22637) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 183 + ... + 280.

It is an arithmetic number, because the mean of its divisors is an integer number (4408).

2²²⁶⁸⁷ is an apocalyptic number.

22687 is a deficient number, since it is larger than the sum of its proper divisors (3761).

22687 is an equidigital number, since it uses as much as digits as its factorization.

22687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477 (or 470 counting only the distinct ones).

The product of its digits is 1344, while the sum is 25.

The square root of 22687 is about 150.6220435395. The cubic root of 22687 is about 28.3090757391.

It can be divided in two parts, 2268 and 7, that multiplied together give a square (15876 = 126²).

The spelling of 22687 in words is "twenty-two thousand, six hundred eighty-seven".