22661423 has 4 divisors (see below), whose sum is σ = 22873320. Its totient is φ = 22449528.

The previous prime is 22661413. The next prime is 22661437. The reversal of 22661423 is 32416622.

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

It is a cyclic number.

It is not a de Polignac number, because 22661423 - 2¹⁰ = 22660399 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22661392 and 22661401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22661413) 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, 105788 + ... + 106001.

It is an arithmetic number, because the mean of its divisors is an integer number (5718330).

Almost surely, 2^22661423 is an apocalyptic number.

22661423 is a deficient number, since it is larger than the sum of its proper divisors (211897).

22661423 is a wasteful number, since it uses less digits than its factorization.

22661423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211896.

The product of its digits is 3456, while the sum is 26.

The square root of 22661423 is about 4760.4015586923. The cubic root of 22661423 is about 282.9843332277.

The spelling of 22661423 in words is "twenty-two million, six hundred sixty-one thousand, four hundred twenty-three".