22641669 has 12 divisors (see below), whose sum is σ = 33589036. Its totient is φ = 14686272.

The previous prime is 22641629. The next prime is 22641677. The reversal of 22641669 is 96614622.

22641669 is a `hidden beast` number, since 2 + 2 + 641 + 6 + 6 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18792225 + 3849444 = 4335^2 + 1962^2 .

It is a de Polignac number, because none of the positive numbers 2^k-22641669 is a prime.

It is a super-2 number, since 2×22641669² = 1025290350211122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22641629) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33664 + ... + 34329.

Almost surely, 2^22641669 is an apocalyptic number.

It is an amenable number.

22641669 is a deficient number, since it is larger than the sum of its proper divisors (10947367).

22641669 is a wasteful number, since it uses less digits than its factorization.

22641669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68036 (or 68033 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 22641669 is about 4758.3262813725. The cubic root of 22641669 is about 282.9020833531.

The spelling of 22641669 in words is "twenty-two million, six hundred forty-one thousand, six hundred sixty-nine".