22642685 has 16 divisors (see below), whose sum is σ = 29559600. Its totient is φ = 16550400.

The previous prime is 22642667. The next prime is 22642687. The reversal of 22642685 is 58624622.

It can be written as a sum of positive squares in 8 ways, for example, as 2374681 + 20268004 = 1541^2 + 4502^2 .

It is not a de Polignac number, because 22642685 - 2⁸ = 22642429 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22642687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4841 + ... + 8289.

It is an arithmetic number, because the mean of its divisors is an integer number (1847475).

Almost surely, 2^22642685 is an apocalyptic number.

It is an amenable number.

22642685 is a deficient number, since it is larger than the sum of its proper divisors (6916915).

22642685 is a wasteful number, since it uses less digits than its factorization.

22642685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3568.

The product of its digits is 46080, while the sum is 35.

The square root of 22642685 is about 4758.4330404031. The cubic root of 22642685 is about 282.9063148465.

The spelling of 22642685 in words is "twenty-two million, six hundred forty-two thousand, six hundred eighty-five".