22662509 has 2 divisors, whose sum is σ = 22662510. Its totient is φ = 22662508.

The previous prime is 22662503. The next prime is 22662529. The reversal of 22662509 is 90526622.

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., 19386409 + 3276100 = 4403^2 + 1810^2 .

It is a cyclic number.

It is not a de Polignac number, because 22662509 - 2¹² = 22658413 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22662503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11331254 + 11331255.

It is an arithmetic number, because the mean of its divisors is an integer number (11331255).

Almost surely, 2^22662509 is an apocalyptic number.

It is an amenable number.

22662509 is a deficient number, since it is larger than the sum of its proper divisors (1).

22662509 is an equidigital number, since it uses as much as digits as its factorization.

22662509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 22662509 is about 4760.5156233333. The cubic root of 22662509 is about 282.9888536275.

The spelling of 22662509 in words is "twenty-two million, six hundred sixty-two thousand, five hundred nine".