6694393 has 2 divisors, whose sum is σ = 6694394. Its totient is φ = 6694392.

The previous prime is 6694367. The next prime is 6694399. The reversal of 6694393 is 3934966.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4108729 + 2585664 = 2027^2 + 1608^2 .

It is a cyclic number.

It is not a de Polignac number, because 6694393 - 2⁵ = 6694361 is a prime.

It is not a weakly prime, because it can be changed into another prime (6694399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3347196 + 3347197.

It is an arithmetic number, because the mean of its divisors is an integer number (3347197).

Almost surely, 2^6694393 is an apocalyptic number.

It is an amenable number.

6694393 is a deficient number, since it is larger than the sum of its proper divisors (1).

6694393 is an equidigital number, since it uses as much as digits as its factorization.

6694393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104976, while the sum is 40.

The square root of 6694393 is about 2587.3525078736. The cubic root of 6694393 is about 188.4677596853.

The spelling of 6694393 in words is "six million, six hundred ninety-four thousand, three hundred ninety-three".