22006723 has 2 divisors, whose sum is σ = 22006724. Its totient is φ = 22006722.

The previous prime is 22006711. The next prime is 22006727. The reversal of 22006723 is 32760022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22006723 - 2¹³ = 21998531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22006694 and 22006703.

It is not a weakly prime, because it can be changed into another prime (22006727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11003361 + 11003362.

It is an arithmetic number, because the mean of its divisors is an integer number (11003362).

Almost surely, 2^22006723 is an apocalyptic number.

22006723 is a deficient number, since it is larger than the sum of its proper divisors (1).

22006723 is an equidigital number, since it uses as much as digits as its factorization.

22006723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 22006723 is about 4691.1323792875. The cubic root of 22006723 is about 280.2324727501.

Adding to 22006723 its reverse (32760022), we get a palindrome (54766745).

The spelling of 22006723 in words is "twenty-two million, six thousand, seven hundred twenty-three".