22640963 has 2 divisors, whose sum is σ = 22640964. Its totient is φ = 22640962.

The previous prime is 22640941. The next prime is 22640987. The reversal of 22640963 is 36904622.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22640963 - 2⁶ = 22640899 is a prime.

It is a super-2 number, since 2×22640963² = 1025226411134738, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22640363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11320481 + 11320482.

It is an arithmetic number, because the mean of its divisors is an integer number (11320482).

Almost surely, 2^22640963 is an apocalyptic number.

22640963 is a deficient number, since it is larger than the sum of its proper divisors (1).

22640963 is an equidigital number, since it uses as much as digits as its factorization.

22640963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 22640963 is about 4758.2520950450. The cubic root of 22640963 is about 282.8991428905.

The spelling of 22640963 in words is "twenty-two million, six hundred forty thousand, nine hundred sixty-three".