6823720 has 32 divisors (see below), whose sum is σ = 15851520. Its totient is φ = 2640960.

The previous prime is 6823703. The next prime is 6823721. The reversal of 6823720 is 273286.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6823721) 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, 1512 + ... + 3991.

It is an arithmetic number, because the mean of its divisors is an integer number (495360).

Almost surely, 2^6823720 is an apocalyptic number.

It is an amenable number.

6823720 is an abundant number, since it is smaller than the sum of its proper divisors (9027800).

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

6823720 is a wasteful number, since it uses less digits than its factorization.

6823720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5545 (or 5541 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 6823720 is about 2612.2251051546. The cubic root of 6823720 is about 189.6736780954.

The spelling of 6823720 in words is "six million, eight hundred twenty-three thousand, seven hundred twenty".