22646969 has 2 divisors, whose sum is σ = 22646970. Its totient is φ = 22646968.

The previous prime is 22646963. The next prime is 22646971. The reversal of 22646969 is 96964622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19360000 + 3286969 = 4400^2 + 1813^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22646969 is a prime.

It is a super-2 number, since 2×22646969² = 1025770409773922, which contains 22 as substring.

Together with 22646971, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22646963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11323484 + 11323485.

It is an arithmetic number, because the mean of its divisors is an integer number (11323485).

Almost surely, 2^22646969 is an apocalyptic number.

It is an amenable number.

22646969 is a deficient number, since it is larger than the sum of its proper divisors (1).

22646969 is an equidigital number, since it uses as much as digits as its factorization.

22646969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 44.

The square root of 22646969 is about 4758.8831672988. The cubic root of 22646969 is about 282.9241556963.

The spelling of 22646969 in words is "twenty-two million, six hundred forty-six thousand, nine hundred sixty-nine".