6721117 has 8 divisors (see below), whose sum is σ = 7619360. Its totient is φ = 5877360.

The previous prime is 6721109. The next prime is 6721123. The reversal of 6721117 is 7111276.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6721117 - 2³ = 6721109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6721091 and 6721100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6721147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13359 + ... + 13852.

It is an arithmetic number, because the mean of its divisors is an integer number (952420).

Almost surely, 2^6721117 is an apocalyptic number.

It is an amenable number.

6721117 is a deficient number, since it is larger than the sum of its proper divisors (898243).

6721117 is a wasteful number, since it uses less digits than its factorization.

6721117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27243.

The product of its digits is 588, while the sum is 25.

The square root of 6721117 is about 2592.5117164634. The cubic root of 6721117 is about 188.7182143163.

The spelling of 6721117 in words is "six million, seven hundred twenty-one thousand, one hundred seventeen".