22772657 has 2 divisors, whose sum is σ = 22772658. Its totient is φ = 22772656.

The previous prime is 22772653. The next prime is 22772663. The reversal of 22772657 is 75627722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13957696 + 8814961 = 3736^2 + 2969^2 .

It is a cyclic number.

It is not a de Polignac number, because 22772657 - 2² = 22772653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22772657.

It is not a weakly prime, because it can be changed into another prime (22772653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11386328 + 11386329.

It is an arithmetic number, because the mean of its divisors is an integer number (11386329).

Almost surely, 2^22772657 is an apocalyptic number.

It is an amenable number.

22772657 is a deficient number, since it is larger than the sum of its proper divisors (1).

22772657 is an equidigital number, since it uses as much as digits as its factorization.

22772657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82320, while the sum is 38.

The square root of 22772657 is about 4772.0705149861. The cubic root of 22772657 is about 283.4465889404.

The spelling of 22772657 in words is "twenty-two million, seven hundred seventy-two thousand, six hundred fifty-seven".