6799821 has 8 divisors (see below), whose sum is σ = 10361664. Its totient is φ = 3885600.

The previous prime is 6799811. The next prime is 6799831. The reversal of 6799821 is 1289976.

It is an interprime number because it is at equal distance from previous prime (6799811) and next prime (6799831).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6799821 - 2¹⁰ = 6798797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6799801) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 161880 + ... + 161921.

It is an arithmetic number, because the mean of its divisors is an integer number (1295208).

Almost surely, 2^6799821 is an apocalyptic number.

It is an amenable number.

6799821 is a deficient number, since it is larger than the sum of its proper divisors (3561843).

6799821 is a wasteful number, since it uses less digits than its factorization.

6799821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323811.

The product of its digits is 54432, while the sum is 42.

The square root of 6799821 is about 2607.6466401719. The cubic root of 6799821 is about 189.4519850597.

Adding to 6799821 its product of digits (54432), we get a triangular number (6854253 = T₃₇₀₂).

The spelling of 6799821 in words is "six million, seven hundred ninety-nine thousand, eight hundred twenty-one".