22724661 has 12 divisors (see below), whose sum is σ = 31383872. Its totient is φ = 14625744.

The previous prime is 22724659. The next prime is 22724707. The reversal of 22724661 is 16642722.

It is not a de Polignac number, because 22724661 - 2¹ = 22724659 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22724561) 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 11 ways as a sum of consecutive naturals, for example, 1981 + ... + 7026.

Almost surely, 2^22724661 is an apocalyptic number.

It is an amenable number.

22724661 is a deficient number, since it is larger than the sum of its proper divisors (8659211).

22724661 is an equidigital number, since it uses as much as digits as its factorization.

22724661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9068 (or 9039 counting only the distinct ones).

The product of its digits is 8064, while the sum is 30.

The square root of 22724661 is about 4767.0390180908. The cubic root of 22724661 is about 283.2473167572.

The spelling of 22724661 in words is "twenty-two million, seven hundred twenty-four thousand, six hundred sixty-one".