6812987 has 2 divisors, whose sum is σ = 6812988. Its totient is φ = 6812986.

The previous prime is 6812983. The next prime is 6813007. The reversal of 6812987 is 7892186.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6812987 - 2² = 6812983 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (6812983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3406493 + 3406494.

It is an arithmetic number, because the mean of its divisors is an integer number (3406494).

Almost surely, 2^6812987 is an apocalyptic number.

6812987 is a deficient number, since it is larger than the sum of its proper divisors (1).

6812987 is an equidigital number, since it uses as much as digits as its factorization.

6812987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 41.

The square root of 6812987 is about 2610.1699178406. The cubic root of 6812987 is about 189.5741802716.

The spelling of 6812987 in words is "six million, eight hundred twelve thousand, nine hundred eighty-seven".