6820443 has 40 divisors (see below), whose sum is σ = 12173568. Its totient is φ = 3720816.

The previous prime is 6820441. The next prime is 6820483. The reversal of 6820443 is 3440286.

It is not a de Polignac number, because 6820443 - 2¹ = 6820441 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (6820441) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 12780 + ... + 13302.

Almost surely, 2^6820443 is an apocalyptic number.

6820443 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

6820443 is a deficient number, since it is larger than the sum of its proper divisors (5353125).

6820443 is a wasteful number, since it uses less digits than its factorization.

6820443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565 (or 556 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 6820443 is about 2611.5977867964. The cubic root of 6820443 is about 189.6433104871.

The spelling of 6820443 in words is "six million, eight hundred twenty thousand, four hundred forty-three".