22668929 has 2 divisors, whose sum is σ = 22668930. Its totient is φ = 22668928.

The previous prime is 22668917. The next prime is 22668949. The reversal of 22668929 is 92986622.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12588304 + 10080625 = 3548^2 + 3175^2 .

It is a cyclic number.

It is not a de Polignac number, because 22668929 - 2⁸ = 22668673 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22668929.

It is not a weakly prime, because it can be changed into another prime (22668949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11334464 + 11334465.

It is an arithmetic number, because the mean of its divisors is an integer number (11334465).

Almost surely, 2^22668929 is an apocalyptic number.

It is an amenable number.

22668929 is a deficient number, since it is larger than the sum of its proper divisors (1).

22668929 is an equidigital number, since it uses as much as digits as its factorization.

22668929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 44.

The square root of 22668929 is about 4761.1898722903. The cubic root of 22668929 is about 283.0155734832.

The spelling of 22668929 in words is "twenty-two million, six hundred sixty-eight thousand, nine hundred twenty-nine".