22633643 has 4 divisors (see below), whose sum is σ = 22690488. Its totient is φ = 22576800.

The previous prime is 22633631. The next prime is 22633669. The reversal of 22633643 is 34633622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34633622 = 2 ⋅17316811.

It is a cyclic number.

It is not a de Polignac number, because 22633643 - 2¹² = 22629547 is a prime.

It is a Duffinian number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27821 + ... + 28622.

It is an arithmetic number, because the mean of its divisors is an integer number (5672622).

Almost surely, 2^22633643 is an apocalyptic number.

22633643 is a deficient number, since it is larger than the sum of its proper divisors (56845).

22633643 is an equidigital number, since it uses as much as digits as its factorization.

22633643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56844.

The product of its digits is 15552, while the sum is 29.

The square root of 22633643 is about 4757.4828428487. The cubic root of 22633643 is about 282.8686517708.

The spelling of 22633643 in words is "twenty-two million, six hundred thirty-three thousand, six hundred forty-three".