6866693 has 2 divisors, whose sum is σ = 6866694. Its totient is φ = 6866692.

The previous prime is 6866683. The next prime is 6866723. The reversal of 6866693 is 3966686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6853924 + 12769 = 2618^2 + 113^2 .

It is a cyclic number.

It is not a de Polignac number, because 6866693 - 2⁴ = 6866677 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6866633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3433346 + 3433347.

It is an arithmetic number, because the mean of its divisors is an integer number (3433347).

Almost surely, 2^6866693 is an apocalyptic number.

It is an amenable number.

6866693 is a deficient number, since it is larger than the sum of its proper divisors (1).

6866693 is an equidigital number, since it uses as much as digits as its factorization.

6866693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 44.

The square root of 6866693 is about 2620.4375588821. The cubic root of 6866693 is about 190.0710076238.

The spelling of 6866693 in words is "six million, eight hundred sixty-six thousand, six hundred ninety-three".