6821036 has 12 divisors (see below), whose sum is σ = 12049128. Its totient is φ = 3378432.

The previous prime is 6821021. The next prime is 6821077. The reversal of 6821036 is 6301286.

It is a super-2 number, since 2×6821036² = 93053064226592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6820996 and 6821014.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7541 + ... + 8396.

It is an arithmetic number, because the mean of its divisors is an integer number (1004094).

Almost surely, 2^6821036 is an apocalyptic number.

It is an amenable number.

6821036 is a deficient number, since it is larger than the sum of its proper divisors (5228092).

6821036 is a wasteful number, since it uses less digits than its factorization.

6821036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16048 (or 16046 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 6821036 is about 2611.7113163594. The cubic root of 6821036 is about 189.6488064754.

The spelling of 6821036 in words is "six million, eight hundred twenty-one thousand, thirty-six".