22471643 has 2 divisors, whose sum is σ = 22471644. Its totient is φ = 22471642.

The previous prime is 22471633. The next prime is 22471679. The reversal of 22471643 is 34617422.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22471643 - 2¹⁰ = 22470619 is a prime.

It is not a weakly prime, because it can be changed into another prime (22471633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11235821 + 11235822.

It is an arithmetic number, because the mean of its divisors is an integer number (11235822).

Almost surely, 2^22471643 is an apocalyptic number.

22471643 is a deficient number, since it is larger than the sum of its proper divisors (1).

22471643 is an equidigital number, since it uses as much as digits as its factorization.

22471643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 29.

The square root of 22471643 is about 4740.4264576091. The cubic root of 22471643 is about 282.1921589889.

The spelling of 22471643 in words is "twenty-two million, four hundred seventy-one thousand, six hundred forty-three".