6845687 has 2 divisors, whose sum is σ = 6845688. Its totient is φ = 6845686.

The previous prime is 6845659. The next prime is 6845693. The reversal of 6845687 is 7865486.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6845687 - 2²⁰ = 5797111 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6845087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3422843 + 3422844.

It is an arithmetic number, because the mean of its divisors is an integer number (3422844).

Almost surely, 2^6845687 is an apocalyptic number.

6845687 is a deficient number, since it is larger than the sum of its proper divisors (1).

6845687 is an equidigital number, since it uses as much as digits as its factorization.

6845687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 44.

The square root of 6845687 is about 2616.4263796255. The cubic root of 6845687 is about 189.8769933278.

The spelling of 6845687 in words is "six million, eight hundred forty-five thousand, six hundred eighty-seven".