22990687 has 2 divisors, whose sum is σ = 22990688. Its totient is φ = 22990686.

The previous prime is 22990663. The next prime is 22990691. The reversal of 22990687 is 78609922.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22990687 - 2⁷ = 22990559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22991687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11495343 + 11495344.

It is an arithmetic number, because the mean of its divisors is an integer number (11495344).

Almost surely, 2^22990687 is an apocalyptic number.

22990687 is a deficient number, since it is larger than the sum of its proper divisors (1).

22990687 is an equidigital number, since it uses as much as digits as its factorization.

22990687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 22990687 is about 4794.8604776364. The cubic root of 22990687 is about 284.3483088421.

The spelling of 22990687 in words is "twenty-two million, nine hundred ninety thousand, six hundred eighty-seven".