22660641 has 10 divisors (see below), whose sum is σ = 33851202. Its totient is φ = 15107040.

The previous prime is 22660639. The next prime is 22660667. The reversal of 22660641 is 14606622.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18740241 + 3920400 = 4329^2 + 1980^2 .

It is not a de Polignac number, because 22660641 - 2¹ = 22660639 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (22660601) 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, 139800 + ... + 139961.

Almost surely, 2^22660641 is an apocalyptic number.

It is an amenable number.

22660641 is a deficient number, since it is larger than the sum of its proper divisors (11190561).

22660641 is an equidigital number, since it uses as much as digits as its factorization.

22660641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279773 (or 279764 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 22660641 is about 4760.3194220556. The cubic root of 22660641 is about 282.9810781174.

The spelling of 22660641 in words is "twenty-two million, six hundred sixty thousand, six hundred forty-one".