22640941 has 2 divisors, whose sum is σ = 22640942. Its totient is φ = 22640940.

The previous prime is 22640939. The next prime is 22640963. The reversal of 22640941 is 14904622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17892900 + 4748041 = 4230^2 + 2179^2 .

It is a cyclic number.

It is not a de Polignac number, because 22640941 - 2¹ = 22640939 is a prime.

It is a super-2 number, since 2×22640941² = 1025224418730962, which contains 22 as substring.

Together with 22640939, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22640921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11320470 + 11320471.

It is an arithmetic number, because the mean of its divisors is an integer number (11320471).

Almost surely, 2^22640941 is an apocalyptic number.

It is an amenable number.

22640941 is a deficient number, since it is larger than the sum of its proper divisors (1).

22640941 is an equidigital number, since it uses as much as digits as its factorization.

22640941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 22640941 is about 4758.2497832712. The cubic root of 22640941 is about 282.8990512603.

The spelling of 22640941 in words is "twenty-two million, six hundred forty thousand, nine hundred forty-one".