22663639 has 2 divisors, whose sum is σ = 22663640. Its totient is φ = 22663638.

The previous prime is 22663631. The next prime is 22663643. The reversal of 22663639 is 93636622.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22663639 - 2³ = 22663631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22663598 and 22663607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22663631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11331819 + 11331820.

It is an arithmetic number, because the mean of its divisors is an integer number (11331820).

Almost surely, 2^22663639 is an apocalyptic number.

22663639 is a deficient number, since it is larger than the sum of its proper divisors (1).

22663639 is an equidigital number, since it uses as much as digits as its factorization.

22663639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 37.

The square root of 22663639 is about 4760.6343064764. The cubic root of 22663639 is about 282.9935570210.

The spelling of 22663639 in words is "twenty-two million, six hundred sixty-three thousand, six hundred thirty-nine".