22681969 has 2 divisors, whose sum is σ = 22681970. Its totient is φ = 22681968.

The previous prime is 22681963. The next prime is 22682003. The reversal of 22681969 is 96918622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22467600 + 214369 = 4740^2 + 463^2 .

It is a cyclic number.

It is not a de Polignac number, because 22681969 - 2⁹ = 22681457 is a prime.

It is a super-2 number, since 2×22681969² = 1028943435433922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22681963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11340984 + 11340985.

It is an arithmetic number, because the mean of its divisors is an integer number (11340985).

Almost surely, 2^22681969 is an apocalyptic number.

It is an amenable number.

22681969 is a deficient number, since it is larger than the sum of its proper divisors (1).

22681969 is an equidigital number, since it uses as much as digits as its factorization.

22681969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 43.

The square root of 22681969 is about 4762.5590809984. The cubic root of 22681969 is about 283.0698300629.

The spelling of 22681969 in words is "twenty-two million, six hundred eighty-one thousand, nine hundred sixty-nine".