6820279 has 4 divisors (see below), whose sum is σ = 7040320. Its totient is φ = 6600240.

The previous prime is 6820277. The next prime is 6820283. The reversal of 6820279 is 9720286.

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

It is a cyclic number.

It is not a de Polignac number, because 6820279 - 2¹ = 6820277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6820277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109974 + ... + 110035.

It is an arithmetic number, because the mean of its divisors is an integer number (1760080).

Almost surely, 2^6820279 is an apocalyptic number.

6820279 is a deficient number, since it is larger than the sum of its proper divisors (220041).

6820279 is a wasteful number, since it uses less digits than its factorization.

6820279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220040.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 6820279 is about 2611.5663882046. The cubic root of 6820279 is about 189.6417904611.

The spelling of 6820279 in words is "six million, eight hundred twenty thousand, two hundred seventy-nine".