6694076387 has 2 divisors, whose sum is σ = 6694076388. Its totient is φ = 6694076386.

The previous prime is 6694076341. The next prime is 6694076393. The reversal of 6694076387 is 7836704966.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6694076387 - 2⁸ = 6694076131 is a prime.

It is not a weakly prime, because it can be changed into another prime (6694076087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3347038193 + 3347038194.

It is an arithmetic number, because the mean of its divisors is an integer number (3347038194).

Almost surely, 2^6694076387 is an apocalyptic number.

6694076387 is a deficient number, since it is larger than the sum of its proper divisors (1).

6694076387 is an equidigital number, since it uses as much as digits as its factorization.

6694076387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9144576, while the sum is 56.

The square root of 6694076387 is about 81817.3354919359. The cubic root of 6694076387 is about 1884.6478842841.

The spelling of 6694076387 in words is "six billion, six hundred ninety-four million, seventy-six thousand, three hundred eighty-seven".