6820286 has 12 divisors (see below), whose sum is σ = 11245416. Its totient is φ = 3100020.

The previous prime is 6820283. The next prime is 6820291.

It is a happy number.

6820286 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×6820286² = 93032602243592, which contains 22 as substring.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6820283) 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 5 ways as a sum of consecutive naturals, for example, 13850 + ... + 14333.

It is an arithmetic number, because the mean of its divisors is an integer number (937118).

Almost surely, 2^6820286 is an apocalyptic number.

6820286 is a deficient number, since it is larger than the sum of its proper divisors (4425130).

6820286 is a wasteful number, since it uses less digits than its factorization.

6820286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28207 (or 28196 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 6820286 is about 2611.5677283961. The cubic root of 6820286 is about 189.6418553408.

The spelling of 6820286 in words is "six million, eight hundred twenty thousand, two hundred eighty-six".