22069665 has 20 divisors (see below), whose sum is σ = 39562644. Its totient is φ = 11770272.

The previous prime is 22069661. The next prime is 22069687. The reversal of 22069665 is 56696022.

It can be written as a sum of positive squares in 2 ways, for example, as 6671889 + 15397776 = 2583^2 + 3924^2 .

It is not a de Polignac number, because 22069665 - 2² = 22069661 is a prime.

It is a super-2 number, since 2×22069665² = 974140226424450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22069661) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26842 + ... + 27651.

Almost surely, 2^22069665 is an apocalyptic number.

It is an amenable number.

22069665 is a deficient number, since it is larger than the sum of its proper divisors (17492979).

22069665 is an equidigital number, since it uses as much as digits as its factorization.

22069665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54510 (or 54501 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 22069665 is about 4697.8362040412. The cubic root of 22069665 is about 280.4993851684.

The spelling of 22069665 in words is "twenty-two million, sixty-nine thousand, six hundred sixty-five".