6806990 has 16 divisors (see below), whose sum is σ = 12454560. Its totient is φ = 2677920.

The previous prime is 6806981. The next prime is 6806993. The reversal of 6806990 is 996086.

It is a super-2 number, since 2×6806990² = 92670225720200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6806993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4970 + ... + 6189.

It is an arithmetic number, because the mean of its divisors is an integer number (778410).

Almost surely, 2^6806990 is an apocalyptic number.

6806990 is a deficient number, since it is larger than the sum of its proper divisors (5647570).

6806990 is a wasteful number, since it uses less digits than its factorization.

6806990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11227.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 6806990 is about 2609.0208891460. The cubic root of 6806990 is about 189.5185409418.

The spelling of 6806990 in words is "six million, eight hundred six thousand, nine hundred ninety".