6630620999 has 2 divisors, whose sum is σ = 6630621000. Its totient is φ = 6630620998.

The previous prime is 6630620989. The next prime is 6630621017. The reversal of 6630620999 is 9990260366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6630620999 - 2²⁰ = 6629572423 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6630620989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3315310499 + 3315310500.

It is an arithmetic number, because the mean of its divisors is an integer number (3315310500).

Almost surely, 2^6630620999 is an apocalyptic number.

6630620999 is a deficient number, since it is larger than the sum of its proper divisors (1).

6630620999 is an equidigital number, since it uses as much as digits as its factorization.

6630620999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 944784, while the sum is 50.

The square root of 6630620999 is about 81428.6251818118. The cubic root of 6630620999 is about 1878.6738987420.

The spelling of 6630620999 in words is "six billion, six hundred thirty million, six hundred twenty thousand, nine hundred ninety-nine".