22662621 has 6 divisors (see below), whose sum is σ = 32734910. Its totient is φ = 15108408.

The previous prime is 22662589. The next prime is 22662637. The reversal of 22662621 is 12626622.

It can be written as a sum of positive squares in only one way, i.e., 21483225 + 1179396 = 4635^2 + 1086^2 .

It is not a de Polignac number, because 22662621 - 2⁵ = 22662589 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22662121) 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, 1259026 + ... + 1259043.

Almost surely, 2^22662621 is an apocalyptic number.

It is an amenable number.

22662621 is a deficient number, since it is larger than the sum of its proper divisors (10072289).

22662621 is a wasteful number, since it uses less digits than its factorization.

22662621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2518075 (or 2518072 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 22662621 is about 4760.5273867503. The cubic root of 22662621 is about 282.9893198115.

The spelling of 22662621 in words is "twenty-two million, six hundred sixty-two thousand, six hundred twenty-one".