22642061 has 4 divisors (see below), whose sum is σ = 24383772. Its totient is φ = 20900352.

The previous prime is 22642013. The next prime is 22642063. The reversal of 22642061 is 16024622.

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 14969161 + 7672900 = 3869^2 + 2770^2 .

It is a cyclic number.

It is not a de Polignac number, because 22642061 - 2¹⁴ = 22625677 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22642063) 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, 870836 + ... + 870861.

It is an arithmetic number, because the mean of its divisors is an integer number (6095943).

Almost surely, 2^22642061 is an apocalyptic number.

It is an amenable number.

22642061 is a deficient number, since it is larger than the sum of its proper divisors (1741711).

22642061 is a wasteful number, since it uses less digits than its factorization.

22642061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1741710.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 22642061 is about 4758.3674721484. The cubic root of 22642061 is about 282.9037159916.

Adding to 22642061 its reverse (16024622), we get a palindrome (38666683).

The spelling of 22642061 in words is "twenty-two million, six hundred forty-two thousand, sixty-one".