22634861 has 4 divisors (see below), whose sum is σ = 23246652. Its totient is φ = 22023072.

The previous prime is 22634849. The next prime is 22634863. The reversal of 22634861 is 16843622.

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 19412836 + 3222025 = 4406^2 + 1795^2 .

It is a cyclic number.

It is not a de Polignac number, because 22634861 - 2⁶ = 22634797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22634863) 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, 305840 + ... + 305913.

It is an arithmetic number, because the mean of its divisors is an integer number (5811663).

Almost surely, 2^22634861 is an apocalyptic number.

It is an amenable number.

22634861 is a deficient number, since it is larger than the sum of its proper divisors (611791).

22634861 is an equidigital number, since it uses as much as digits as its factorization.

22634861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611790.

The product of its digits is 13824, while the sum is 32.

The square root of 22634861 is about 4757.6108499960. The cubic root of 22634861 is about 282.8737257491.

The spelling of 22634861 in words is "twenty-two million, six hundred thirty-four thousand, eight hundred sixty-one".