6873820 has 24 divisors (see below), whose sum is σ = 15195600. Its totient is φ = 2604672.

The previous prime is 6873799. The next prime is 6873821. The reversal of 6873820 is 283786.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6873821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8665 + ... + 9424.

It is an arithmetic number, because the mean of its divisors is an integer number (633150).

Almost surely, 2^6873820 is an apocalyptic number.

It is an amenable number.

6873820 is an abundant number, since it is smaller than the sum of its proper divisors (8321780).

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

6873820 is a wasteful number, since it uses less digits than its factorization.

6873820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18117 (or 18115 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 6873820 is about 2621.7970935982. The cubic root of 6873820 is about 190.1367436668.

Subtracting from 6873820 its sum of digits (34), we obtain a palindrome (6873786).

The spelling of 6873820 in words is "six million, eight hundred seventy-three thousand, eight hundred twenty".