6811994 has 16 divisors (see below), whose sum is σ = 12292800. Its totient is φ = 2765664.

The previous prime is 6811993. The next prime is 6811997. The reversal of 6811994 is 4991186.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (6811993) 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, 12539 + ... + 13070.

It is an arithmetic number, because the mean of its divisors is an integer number (768300).

Almost surely, 2^6811994 is an apocalyptic number.

6811994 is a deficient number, since it is larger than the sum of its proper divisors (5480806).

6811994 is a wasteful number, since it uses less digits than its factorization.

6811994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25637.

The product of its digits is 15552, while the sum is 38.

The square root of 6811994 is about 2609.9796934076. The cubic root of 6811994 is about 189.5649696123.

The spelling of 6811994 in words is "six million, eight hundred eleven thousand, nine hundred ninety-four".