22268681 has 2 divisors, whose sum is σ = 22268682. Its totient is φ = 22268680.

The previous prime is 22268671. The next prime is 22268693. The reversal of 22268681 is 18686222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13388281 + 8880400 = 3659^2 + 2980^2 .

It is a cyclic number.

It is not a de Polignac number, because 22268681 - 2¹⁴ = 22252297 is a prime.

It is a super-2 number, since 2×22268681² = 991788306959522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22268671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11134340 + 11134341.

It is an arithmetic number, because the mean of its divisors is an integer number (11134341).

Almost surely, 2^22268681 is an apocalyptic number.

It is an amenable number.

22268681 is a deficient number, since it is larger than the sum of its proper divisors (1).

22268681 is an equidigital number, since it uses as much as digits as its factorization.

22268681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 35.

The square root of 22268681 is about 4718.9703326043. The cubic root of 22268681 is about 281.3400096434.

The spelling of 22268681 in words is "twenty-two million, two hundred sixty-eight thousand, six hundred eighty-one".