6694396087 has 2 divisors, whose sum is σ = 6694396088. Its totient is φ = 6694396086.

The previous prime is 6694396069. The next prime is 6694396129. The reversal of 6694396087 is 7806934966.

6694396087 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6694396087 - 2²³ = 6686007479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6694394087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3347198043 + 3347198044.

It is an arithmetic number, because the mean of its divisors is an integer number (3347198044).

Almost surely, 2^6694396087 is an apocalyptic number.

6694396087 is a deficient number, since it is larger than the sum of its proper divisors (1).

6694396087 is an equidigital number, since it uses as much as digits as its factorization.

6694396087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11757312, while the sum is 58.

The square root of 6694396087 is about 81819.2892110412. The cubic root of 6694396087 is about 1884.6778865479.

The spelling of 6694396087 in words is "six billion, six hundred ninety-four million, three hundred ninety-six thousand, eighty-seven".