22723643 has 2 divisors, whose sum is σ = 22723644. Its totient is φ = 22723642.

The previous prime is 22723583. The next prime is 22723663. The reversal of 22723643 is 34632722.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22723643 - 2⁶ = 22723579 is a prime.

It is not a weakly prime, because it can be changed into another prime (22723663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11361821 + 11361822.

It is an arithmetic number, because the mean of its divisors is an integer number (11361822).

Almost surely, 2^22723643 is an apocalyptic number.

22723643 is a deficient number, since it is larger than the sum of its proper divisors (1).

22723643 is an equidigital number, since it uses as much as digits as its factorization.

22723643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 29.

The square root of 22723643 is about 4766.9322420190. The cubic root of 22723643 is about 283.2430871367.

The spelling of 22723643 in words is "twenty-two million, seven hundred twenty-three thousand, six hundred forty-three".