22536861 has 8 divisors (see below), whose sum is σ = 30086784. Its totient is φ = 15005760.

The previous prime is 22536841. The next prime is 22536863. The reversal of 22536861 is 16863522.

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

It is not a de Polignac number, because 22536861 - 2¹⁸ = 22274717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22536863) 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, 1621 + ... + 6906.

It is an arithmetic number, because the mean of its divisors is an integer number (3760848).

Almost surely, 2^22536861 is an apocalyptic number.

It is an amenable number.

22536861 is a deficient number, since it is larger than the sum of its proper divisors (7549923).

22536861 is an equidigital number, since it uses as much as digits as its factorization.

22536861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9411.

The product of its digits is 17280, while the sum is 33.

The square root of 22536861 is about 4747.3003907484. The cubic root of 22536861 is about 282.4648913479.

The spelling of 22536861 in words is "twenty-two million, five hundred thirty-six thousand, eight hundred sixty-one".