22536681 has 8 divisors (see below), whose sum is σ = 30152640. Its totient is φ = 14972592.

The previous prime is 22536677. The next prime is 22536707. The reversal of 22536681 is 18663522.

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

It is not a de Polignac number, because 22536681 - 2² = 22536677 is a prime.

It is a super-2 number, since 2×22536681² = 1015803980991522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22536671) 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, 11941 + ... + 13698.

It is an arithmetic number, because the mean of its divisors is an integer number (3769080).

Almost surely, 2^22536681 is an apocalyptic number.

It is an amenable number.

22536681 is a deficient number, since it is larger than the sum of its proper divisors (7615959).

22536681 is a wasteful number, since it uses less digits than its factorization.

22536681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25935.

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

The square root of 22536681 is about 4747.2814325675. The cubic root of 22536681 is about 282.4641393382.

The spelling of 22536681 in words is "twenty-two million, five hundred thirty-six thousand, six hundred eighty-one".