22665744 has 50 divisors (see below), whose sum is σ = 65604990. Its totient is φ = 7554816.

The previous prime is 22665739. The next prime is 22665749. The reversal of 22665744 is 44756622.

22665744 is a `hidden beast` number, since 22 + 66 + 574 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (22665739) and next prime (22665749).

It can be written as a sum of positive squares in only one way, i.e., 11696400 + 10969344 = 3420^2 + 3312^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 22665699 and 22665708.

It is not an unprimeable number, because it can be changed into a prime (22665749) 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 in 9 ways as a sum of consecutive naturals, for example, 7449 + ... + 10040.

Almost surely, 2^22665744 is an apocalyptic number.

22665744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22665744 is an abundant number, since it is smaller than the sum of its proper divisors (42939246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22665744 is a wasteful number, since it uses less digits than its factorization.

22665744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17509 (or 17494 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 22665744 is about 4760.8553853273. The cubic root of 22665744 is about 283.0023182353.

It can be divided in two parts, 22665 and 744, that added together give a square (23409 = 153²).

The spelling of 22665744 in words is "twenty-two million, six hundred sixty-five thousand, seven hundred forty-four".