22663457 has 2 divisors, whose sum is σ = 22663458. Its totient is φ = 22663456.

The previous prime is 22663429. The next prime is 22663463. The reversal of 22663457 is 75436622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22648081 + 15376 = 4759^2 + 124^2 .

It is a cyclic number.

It is not a de Polignac number, because 22663457 - 2¹² = 22659361 is a prime.

It is not a weakly prime, because it can be changed into another prime (22663427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11331728 + 11331729.

It is an arithmetic number, because the mean of its divisors is an integer number (11331729).

Almost surely, 2^22663457 is an apocalyptic number.

It is an amenable number.

22663457 is a deficient number, since it is larger than the sum of its proper divisors (1).

22663457 is an equidigital number, since it uses as much as digits as its factorization.

22663457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 35.

The square root of 22663457 is about 4760.6151913382. The cubic root of 22663457 is about 282.9927994938.

The spelling of 22663457 in words is "twenty-two million, six hundred sixty-three thousand, four hundred fifty-seven".