22563967 has 2 divisors, whose sum is σ = 22563968. Its totient is φ = 22563966.

The previous prime is 22563941. The next prime is 22563971. The reversal of 22563967 is 76936522.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22563967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22563907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11281983 + 11281984.

It is an arithmetic number, because the mean of its divisors is an integer number (11281984).

Almost surely, 2^22563967 is an apocalyptic number.

22563967 is a deficient number, since it is larger than the sum of its proper divisors (1).

22563967 is an equidigital number, since it uses as much as digits as its factorization.

22563967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 40.

The square root of 22563967 is about 4750.1544185426. The cubic root of 22563967 is about 282.5780899843.

The spelling of 22563967 in words is "twenty-two million, five hundred sixty-three thousand, nine hundred sixty-seven".