22861637 has 2 divisors, whose sum is σ = 22861638. Its totient is φ = 22861636.

The previous prime is 22861633. The next prime is 22861649. The reversal of 22861637 is 73616822.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22600516 + 261121 = 4754^2 + 511^2 .

It is a cyclic number.

It is not a de Polignac number, because 22861637 - 2² = 22861633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22861597 and 22861606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22861633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11430818 + 11430819.

It is an arithmetic number, because the mean of its divisors is an integer number (11430819).

Almost surely, 2^22861637 is an apocalyptic number.

It is an amenable number.

22861637 is a deficient number, since it is larger than the sum of its proper divisors (1).

22861637 is an equidigital number, since it uses as much as digits as its factorization.

22861637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 35.

The square root of 22861637 is about 4781.3844229470. The cubic root of 22861637 is about 283.8152810915.

The spelling of 22861637 in words is "twenty-two million, eight hundred sixty-one thousand, six hundred thirty-seven".