6721832 has 16 divisors (see below), whose sum is σ = 13573140. Its totient is φ = 3102336.

The previous prime is 6721789. The next prime is 6721843. The reversal of 6721832 is 2381276.

It is a happy number.

6721832 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 6522916 + 198916 = 2554^2 + 446^2 .

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 6721795 and 6721804.

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, 32213 + ... + 32420.

Almost surely, 2^6721832 is an apocalyptic number.

It is an amenable number.

6721832 is an abundant number, since it is smaller than the sum of its proper divisors (6851308).

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

6721832 is a wasteful number, since it uses less digits than its factorization.

6721832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64652 (or 64648 counting only the distinct ones).

The product of its digits is 4032, while the sum is 29.

The square root of 6721832 is about 2592.6496099550. The cubic root of 6721832 is about 188.7249060978.

The spelling of 6721832 in words is "six million, seven hundred twenty-one thousand, eight hundred thirty-two".