22651663 has 2 divisors, whose sum is σ = 22651664. Its totient is φ = 22651662.

The previous prime is 22651609. The next prime is 22651709. The reversal of 22651663 is 36615622.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22651663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22651163) 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, 11325831 + 11325832.

It is an arithmetic number, because the mean of its divisors is an integer number (11325832).

Almost surely, 2^22651663 is an apocalyptic number.

22651663 is a deficient number, since it is larger than the sum of its proper divisors (1).

22651663 is an equidigital number, since it uses as much as digits as its factorization.

22651663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

The square root of 22651663 is about 4759.3763246879. The cubic root of 22651663 is about 282.9437014207.

The spelling of 22651663 in words is "twenty-two million, six hundred fifty-one thousand, six hundred sixty-three".