22678693 has 2 divisors, whose sum is σ = 22678694. Its totient is φ = 22678692.

The previous prime is 22678687. The next prime is 22678709. The reversal of 22678693 is 39687622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13786369 + 8892324 = 3713^2 + 2982^2 .

It is a cyclic number.

It is not a de Polignac number, because 22678693 - 2⁵ = 22678661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22678613) 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, 11339346 + 11339347.

It is an arithmetic number, because the mean of its divisors is an integer number (11339347).

Almost surely, 2^22678693 is an apocalyptic number.

It is an amenable number.

22678693 is a deficient number, since it is larger than the sum of its proper divisors (1).

22678693 is an equidigital number, since it uses as much as digits as its factorization.

22678693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 43.

The square root of 22678693 is about 4762.2151358375. The cubic root of 22678693 is about 283.0562013018.

The spelling of 22678693 in words is "twenty-two million, six hundred seventy-eight thousand, six hundred ninety-three".