6729920 has 28 divisors (see below), whose sum is σ = 16026384. Its totient is φ = 2691840.

The previous prime is 6729911. The next prime is 6729991. The reversal of 6729920 is 299276.

6729920 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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, 10196 + ... + 10835.

Almost surely, 2^6729920 is an apocalyptic number.

It is an amenable number.

6729920 is an abundant number, since it is smaller than the sum of its proper divisors (9296464).

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

6729920 is a wasteful number, since it uses less digits than its factorization.

6729920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21048 (or 21038 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 6729920 is about 2594.2089353019. The cubic root of 6729920 is about 188.8005697579.

The spelling of 6729920 in words is "six million, seven hundred twenty-nine thousand, nine hundred twenty".