6721172 has 24 divisors (see below), whose sum is σ = 12337920. Its totient is φ = 3199680.

The previous prime is 6721159. The next prime is 6721177. The reversal of 6721172 is 2711276.

6721172 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6721177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7904 + ... + 8712.

It is an arithmetic number, because the mean of its divisors is an integer number (514080).

Almost surely, 2^6721172 is an apocalyptic number.

6721172 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

6721172 is a deficient number, since it is larger than the sum of its proper divisors (5616748).

6721172 is a wasteful number, since it uses less digits than its factorization.

6721172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911 (or 909 counting only the distinct ones).

The product of its digits is 1176, while the sum is 26.

The square root of 6721172 is about 2592.5223239155. The cubic root of 6721172 is about 188.7187290856.

The spelling of 6721172 in words is "six million, seven hundred twenty-one thousand, one hundred seventy-two".