6820836 has 24 divisors (see below), whose sum is σ = 17362464. Its totient is φ = 2066880.

The previous prime is 6820823. The next prime is 6820841. The reversal of 6820836 is 6380286.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 6820797 and 6820806.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25705 + ... + 25968.

It is an arithmetic number, because the mean of its divisors is an integer number (723436).

Almost surely, 2^6820836 is an apocalyptic number.

6820836 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

6820836 is an abundant number, since it is smaller than the sum of its proper divisors (10541628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6820836 is a wasteful number, since it uses less digits than its factorization.

6820836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51691 (or 51689 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 6820836 is about 2611.6730270078. The cubic root of 6820836 is about 189.6469528893.

The spelling of 6820836 in words is "six million, eight hundred twenty thousand, eight hundred thirty-six".