6981804 has 18 divisors (see below), whose sum is σ = 17648540. Its totient is φ = 2327256.

The previous prime is 6981791. The next prime is 6981823. The reversal of 6981804 is 4081896.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 193939 = 6981804 / (6 + 9 + 8 + 1 + 8 + 0 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 96934 + ... + 97005.

Almost surely, 2^6981804 is an apocalyptic number.

It is an amenable number.

6981804 is an abundant number, since it is smaller than the sum of its proper divisors (10666736).

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

6981804 is a wasteful number, since it uses less digits than its factorization.

6981804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193949 (or 193944 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 6981804 is about 2642.3103527027. The cubic root of 6981804 is about 191.1272235178.

The spelling of 6981804 in words is "six million, nine hundred eighty-one thousand, eight hundred four".