22610881 has 2 divisors, whose sum is σ = 22610882. Its totient is φ = 22610880.

The previous prime is 22610843. The next prime is 22610999. The reversal of 22610881 is 18801622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19000881 + 3610000 = 4359^2 + 1900^2 .

It is a cyclic number.

It is not a de Polignac number, because 22610881 - 2⁹ = 22610369 is a prime.

It is a super-2 number, since 2×22610881² = 1022503879192322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22610821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11305440 + 11305441.

It is an arithmetic number, because the mean of its divisors is an integer number (11305441).

Almost surely, 2^22610881 is an apocalyptic number.

It is an amenable number.

22610881 is a deficient number, since it is larger than the sum of its proper divisors (1).

22610881 is an equidigital number, since it uses as much as digits as its factorization.

22610881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 22610881 is about 4755.0900096633. The cubic root of 22610881 is about 282.7737956923.

The spelling of 22610881 in words is "twenty-two million, six hundred ten thousand, eight hundred eighty-one".