22765657 has 2 divisors, whose sum is σ = 22765658. Its totient is φ = 22765656.

The previous prime is 22765649. The next prime is 22765663. The reversal of 22765657 is 75656722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12880921 + 9884736 = 3589^2 + 3144^2 .

It is a cyclic number.

It is not a de Polignac number, because 22765657 - 2³ = 22765649 is a prime.

It is not a weakly prime, because it can be changed into another prime (22765357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11382828 + 11382829.

It is an arithmetic number, because the mean of its divisors is an integer number (11382829).

Almost surely, 2^22765657 is an apocalyptic number.

It is an amenable number.

22765657 is a deficient number, since it is larger than the sum of its proper divisors (1).

22765657 is an equidigital number, since it uses as much as digits as its factorization.

22765657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 176400, while the sum is 40.

The square root of 22765657 is about 4771.3370243570. The cubic root of 22765657 is about 283.4175434429.

The spelling of 22765657 in words is "twenty-two million, seven hundred sixty-five thousand, six hundred fifty-seven".