22636345 has 4 divisors (see below), whose sum is σ = 27163620. Its totient is φ = 18109072.

The previous prime is 22636337. The next prime is 22636363. The reversal of 22636345 is 54363622.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15808576 + 6827769 = 3976^2 + 2613^2 .

It is a cyclic number.

It is not a de Polignac number, because 22636345 - 2³ = 22636337 is a prime.

It is a super-2 number, since 2×22636345² = 1024808229918050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2263630 + ... + 2263639.

It is an arithmetic number, because the mean of its divisors is an integer number (6790905).

Almost surely, 2^22636345 is an apocalyptic number.

It is an amenable number.

22636345 is a deficient number, since it is larger than the sum of its proper divisors (4527275).

22636345 is an equidigital number, since it uses as much as digits as its factorization.

22636345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4527274.

The product of its digits is 25920, while the sum is 31.

The square root of 22636345 is about 4757.7668080729. The cubic root of 22636345 is about 282.8799075915.

Adding to 22636345 its reverse (54363622), we get a palindrome (76999967).

The spelling of 22636345 in words is "twenty-two million, six hundred thirty-six thousand, three hundred forty-five".