6819998 has 4 divisors (see below), whose sum is σ = 10230000. Its totient is φ = 3409998.

The previous prime is 6819977. The next prime is 6820001. The reversal of 6819998 is 8999186.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1704998 + ... + 1705001.

It is an arithmetic number, because the mean of its divisors is an integer number (2557500).

Almost surely, 2^6819998 is an apocalyptic number.

6819998 is a deficient number, since it is larger than the sum of its proper divisors (3410002).

6819998 is a wasteful number, since it uses less digits than its factorization.

6819998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3410001.

The product of its digits is 279936, while the sum is 50.

The square root of 6819998 is about 2611.5125885203. The cubic root of 6819998 is about 189.6391859697.

The spelling of 6819998 in words is "six million, eight hundred nineteen thousand, nine hundred ninety-eight".