6628786499 has 2 divisors, whose sum is σ = 6628786500. Its totient is φ = 6628786498.

The previous prime is 6628786487. The next prime is 6628786529. The reversal of 6628786499 is 9946878266.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6628786499 - 2¹⁶ = 6628720963 is a prime.

It is not a weakly prime, because it can be changed into another prime (6628786459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3314393249 + 3314393250.

It is an arithmetic number, because the mean of its divisors is an integer number (3314393250).

Almost surely, 2^6628786499 is an apocalyptic number.

6628786499 is a deficient number, since it is larger than the sum of its proper divisors (1).

6628786499 is an equidigital number, since it uses as much as digits as its factorization.

6628786499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62705664, while the sum is 65.

The square root of 6628786499 is about 81417.3599363182. The cubic root of 6628786499 is about 1878.5006246168.

The spelling of 6628786499 in words is "six billion, six hundred twenty-eight million, seven hundred eighty-six thousand, four hundred ninety-nine".