6990843 has 4 divisors (see below), whose sum is σ = 9321128. Its totient is φ = 4660560.

The previous prime is 6990839. The next prime is 6990853. The reversal of 6990843 is 3480996.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6990843 - 2² = 6990839 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6990853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1165138 + ... + 1165143.

It is an arithmetic number, because the mean of its divisors is an integer number (2330282).

Almost surely, 2^6990843 is an apocalyptic number.

6990843 is a deficient number, since it is larger than the sum of its proper divisors (2330285).

6990843 is a wasteful number, since it uses less digits than its factorization.

6990843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2330284.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 6990843 is about 2644.0202344158. The cubic root of 6990843 is about 191.2096689700.

The spelling of 6990843 in words is "six million, nine hundred ninety thousand, eight hundred forty-three".