6721672 has 32 divisors (see below), whose sum is σ = 13063680. Its totient is φ = 3240640.

The previous prime is 6721669. The next prime is 6721691. The reversal of 6721672 is 2761276.

6721672 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35097 + ... + 35287.

It is an arithmetic number, because the mean of its divisors is an integer number (408240).

Almost surely, 2^6721672 is an apocalyptic number.

It is an amenable number.

6721672 is a deficient number, since it is larger than the sum of its proper divisors (6342008).

6721672 is a wasteful number, since it uses less digits than its factorization.

6721672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333 (or 329 counting only the distinct ones).

The product of its digits is 7056, while the sum is 31.

The square root of 6721672 is about 2592.6187533072. The cubic root of 6721672 is about 188.7234086774.

The spelling of 6721672 in words is "six million, seven hundred twenty-one thousand, six hundred seventy-two".