6816990 has 16 divisors (see below), whose sum is σ = 16360848. Its totient is φ = 1817856.

The previous prime is 6816973. The next prime is 6817007. The reversal of 6816990 is 996186.

It is an interprime number because it is at equal distance from previous prime (6816973) and next prime (6817007).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113587 + ... + 113646.

It is an arithmetic number, because the mean of its divisors is an integer number (1022553).

Almost surely, 2^6816990 is an apocalyptic number.

6816990 is an abundant number, since it is smaller than the sum of its proper divisors (9543858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6816990 is a wasteful number, since it uses less digits than its factorization.

6816990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227243.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 6816990 is about 2610.9366135546. The cubic root of 6816990 is about 189.6113013791.

The spelling of 6816990 in words is "six million, eight hundred sixteen thousand, nine hundred ninety".