6813992 has 8 divisors (see below), whose sum is σ = 12776250. Its totient is φ = 3406992.

The previous prime is 6813977. The next prime is 6814001. The reversal of 6813992 is 2993186.

It can be written as a sum of positive squares in only one way, i.e., 4104676 + 2709316 = 2026^2 + 1646^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425867 + ... + 425882.

Almost surely, 2^6813992 is an apocalyptic number.

It is an amenable number.

6813992 is a deficient number, since it is larger than the sum of its proper divisors (5962258).

6813992 is a wasteful number, since it uses less digits than its factorization.

6813992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851755 (or 851751 counting only the distinct ones).

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

The square root of 6813992 is about 2610.3624269438. The cubic root of 6813992 is about 189.5835013269.

The spelling of 6813992 in words is "six million, eight hundred thirteen thousand, nine hundred ninety-two".