6637229 has 2 divisors, whose sum is σ = 6637230. Its totient is φ = 6637228.

The previous prime is 6637223. The next prime is 6637237. The reversal of 6637229 is 9227366.

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., 6620329 + 16900 = 2573^2 + 130^2 .

It is a cyclic number.

It is not a de Polignac number, because 6637229 - 2¹⁶ = 6571693 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6637223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3318614 + 3318615.

It is an arithmetic number, because the mean of its divisors is an integer number (3318615).

Almost surely, 2^6637229 is an apocalyptic number.

It is an amenable number.

6637229 is a deficient number, since it is larger than the sum of its proper divisors (1).

6637229 is an equidigital number, since it uses as much as digits as its factorization.

6637229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 35.

The square root of 6637229 is about 2576.2820109608. The cubic root of 6637229 is about 187.9297779839.

The spelling of 6637229 in words is "six million, six hundred thirty-seven thousand, two hundred twenty-nine".