22621663 has 2 divisors, whose sum is σ = 22621664. Its totient is φ = 22621662.

The previous prime is 22621657. The next prime is 22621681. The reversal of 22621663 is 36612622.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22621663 - 2⁵ = 22621631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22621693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11310831 + 11310832.

It is an arithmetic number, because the mean of its divisors is an integer number (11310832).

Almost surely, 2^22621663 is an apocalyptic number.

22621663 is a deficient number, since it is larger than the sum of its proper divisors (1).

22621663 is an equidigital number, since it uses as much as digits as its factorization.

22621663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 28.

The square root of 22621663 is about 4756.2236070227. The cubic root of 22621663 is about 282.8187354506.

The spelling of 22621663 in words is "twenty-two million, six hundred twenty-one thousand, six hundred sixty-three".