22036657 has 2 divisors, whose sum is σ = 22036658. Its totient is φ = 22036656.

The previous prime is 22036649. The next prime is 22036661. The reversal of 22036657 is 75663022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16842816 + 5193841 = 4104^2 + 2279^2 .

It is a cyclic number.

It is not a de Polignac number, because 22036657 - 2³ = 22036649 is a prime.

It is a super-2 number, since 2×22036657² = 971228503471298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22036627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11018328 + 11018329.

It is an arithmetic number, because the mean of its divisors is an integer number (11018329).

Almost surely, 2^22036657 is an apocalyptic number.

It is an amenable number.

22036657 is a deficient number, since it is larger than the sum of its proper divisors (1).

22036657 is an equidigital number, since it uses as much as digits as its factorization.

22036657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 22036657 is about 4694.3217827499. The cubic root of 22036657 is about 280.3594745201.

Adding to 22036657 its reverse (75663022), we get a palindrome (97699679).

The spelling of 22036657 in words is "twenty-two million, thirty-six thousand, six hundred fifty-seven".