6630839 has 2 divisors, whose sum is σ = 6630840. Its totient is φ = 6630838.

The previous prime is 6630817. The next prime is 6630847. The reversal of 6630839 is 9380366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6630839 - 2⁸ = 6630583 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6630799 and 6630808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6630859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3315419 + 3315420.

It is an arithmetic number, because the mean of its divisors is an integer number (3315420).

Almost surely, 2^6630839 is an apocalyptic number.

6630839 is a deficient number, since it is larger than the sum of its proper divisors (1).

6630839 is an equidigital number, since it uses as much as digits as its factorization.

6630839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 6630839 is about 2575.0415530628. The cubic root of 6630839 is about 187.8694487477.

The spelling of 6630839 in words is "six million, six hundred thirty thousand, eight hundred thirty-nine".