22635641 has 4 divisors (see below), whose sum is σ = 25869312. Its totient is φ = 19401972.

The previous prime is 22635583. The next prime is 22635643. The reversal of 22635641 is 14653622.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22635641 - 2⁶ = 22635577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22635643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1616825 + ... + 1616838.

It is an arithmetic number, because the mean of its divisors is an integer number (6467328).

Almost surely, 2^22635641 is an apocalyptic number.

It is an amenable number.

22635641 is a deficient number, since it is larger than the sum of its proper divisors (3233671).

22635641 is an equidigital number, since it uses as much as digits as its factorization.

22635641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3233670.

The product of its digits is 8640, while the sum is 29.

The square root of 22635641 is about 4757.6928232075. The cubic root of 22635641 is about 282.8769749991.

The spelling of 22635641 in words is "twenty-two million, six hundred thirty-five thousand, six hundred forty-one".