6623231 has 2 divisors, whose sum is σ = 6623232. Its totient is φ = 6623230.

The previous prime is 6623213. The next prime is 6623237. The reversal of 6623231 is 1323266.

Together with previous prime (6623213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6623231 is a prime.

It is a super-2 number, since 2×6623231² = 87734377758722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6623197 and 6623206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6623237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3311615 + 3311616.

It is an arithmetic number, because the mean of its divisors is an integer number (3311616).

Almost surely, 2^6623231 is an apocalyptic number.

6623231 is a deficient number, since it is larger than the sum of its proper divisors (1).

6623231 is an equidigital number, since it uses as much as digits as its factorization.

6623231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 23.

The square root of 6623231 is about 2573.5638713659. The cubic root of 6623231 is about 187.7975695701.

Adding to 6623231 its reverse (1323266), we get a palindrome (7946497).

The spelling of 6623231 in words is "six million, six hundred twenty-three thousand, two hundred thirty-one".