22566769 has 8 divisors (see below), whose sum is σ = 24477768. Its totient is φ = 20720640.

The previous prime is 22566763. The next prime is 22566773. The reversal of 22566769 is 96766522.

It can be written as a sum of positive squares in 4 ways, for example, as 2433600 + 20133169 = 1560^2 + 4487^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22566769 - 2⁷ = 22566641 is a prime.

It is a super-2 number, since 2×22566769² = 1018518126198722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22566763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15492 + ... + 16885.

It is an arithmetic number, because the mean of its divisors is an integer number (3059721).

Almost surely, 2^22566769 is an apocalyptic number.

It is an amenable number.

22566769 is a deficient number, since it is larger than the sum of its proper divisors (1910999).

22566769 is a wasteful number, since it uses less digits than its factorization.

22566769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32435.

The product of its digits is 272160, while the sum is 43.

The square root of 22566769 is about 4750.4493471671. The cubic root of 22566769 is about 282.5897863767.

It can be divided in two parts, 2256 and 6769, that added together give a square (9025 = 95²).

The spelling of 22566769 in words is "twenty-two million, five hundred sixty-six thousand, seven hundred sixty-nine".