22461643 has 2 divisors, whose sum is σ = 22461644. Its totient is φ = 22461642.

The previous prime is 22461623. The next prime is 22461679. The reversal of 22461643 is 34616422.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22461643 is a prime.

It is not a weakly prime, because it can be changed into another prime (22461623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11230821 + 11230822.

It is an arithmetic number, because the mean of its divisors is an integer number (11230822).

Almost surely, 2^22461643 is an apocalyptic number.

22461643 is a deficient number, since it is larger than the sum of its proper divisors (1).

22461643 is an equidigital number, since it uses as much as digits as its factorization.

22461643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 28.

The square root of 22461643 is about 4739.3715828156. The cubic root of 22461643 is about 282.1502937770.

It can be divided in two parts, 22461 and 643, that added together give a square (23104 = 152²).

The spelling of 22461643 in words is "twenty-two million, four hundred sixty-one thousand, six hundred forty-three".