6636799087 has 2 divisors, whose sum is σ = 6636799088. Its totient is φ = 6636799086.

The previous prime is 6636799069. The next prime is 6636799151. The reversal of 6636799087 is 7809976366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6636799087 - 2²³ = 6628410479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6636793087) 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, 3318399543 + 3318399544.

It is an arithmetic number, because the mean of its divisors is an integer number (3318399544).

Almost surely, 2^6636799087 is an apocalyptic number.

6636799087 is a deficient number, since it is larger than the sum of its proper divisors (1).

6636799087 is an equidigital number, since it uses as much as digits as its factorization.

6636799087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20575296, while the sum is 61.

The square root of 6636799087 is about 81466.5519523197. The cubic root of 6636799087 is about 1879.2572030665.

The spelling of 6636799087 in words is "six billion, six hundred thirty-six million, seven hundred ninety-nine thousand, eighty-seven".