6329649691 has 2 divisors, whose sum is σ = 6329649692. Its totient is φ = 6329649690.

The previous prime is 6329649679. The next prime is 6329649701. The reversal of 6329649691 is 1969469236.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6329649691 - 2⁷ = 6329649563 is a prime.

It is not a weakly prime, because it can be changed into another prime (6329649631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3164824845 + 3164824846.

It is an arithmetic number, because the mean of its divisors is an integer number (3164824846).

Almost surely, 2^6329649691 is an apocalyptic number.

6329649691 is a deficient number, since it is larger than the sum of its proper divisors (1).

6329649691 is an equidigital number, since it uses as much as digits as its factorization.

6329649691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3779136, while the sum is 55.

The square root of 6329649691 is about 79559.0955893793. The cubic root of 6329649691 is about 1849.8075953785.

The spelling of 6329649691 in words is "six billion, three hundred twenty-nine million, six hundred forty-nine thousand, six hundred ninety-one".