22047637 has 2 divisors, whose sum is σ = 22047638. Its totient is φ = 22047636.

The previous prime is 22047631. The next prime is 22047673. The reversal of 22047637 is 73674022.

It is a happy number.

Together with next prime (22047673) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21288996 + 758641 = 4614^2 + 871^2 .

It is a cyclic number.

It is not a de Polignac number, because 22047637 - 2¹¹ = 22045589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22047599 and 22047608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22047631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11023818 + 11023819.

It is an arithmetic number, because the mean of its divisors is an integer number (11023819).

Almost surely, 2^22047637 is an apocalyptic number.

It is an amenable number.

22047637 is a deficient number, since it is larger than the sum of its proper divisors (1).

22047637 is an equidigital number, since it uses as much as digits as its factorization.

22047637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 22047637 is about 4695.4911351210. The cubic root of 22047637 is about 280.4060308240.

The spelling of 22047637 in words is "twenty-two million, forty-seven thousand, six hundred thirty-seven".