6717121 has 4 divisors (see below), whose sum is σ = 6722352. Its totient is φ = 6711892.

The previous prime is 6717119. The next prime is 6717131. The reversal of 6717121 is 1217176.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6717121 - 2¹ = 6717119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6717101) 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 3 ways as a sum of consecutive naturals, for example, 786 + ... + 3748.

It is an arithmetic number, because the mean of its divisors is an integer number (1680588).

Almost surely, 2^6717121 is an apocalyptic number.

It is an amenable number.

6717121 is a deficient number, since it is larger than the sum of its proper divisors (5231).

6717121 is a wasteful number, since it uses less digits than its factorization.

6717121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5230.

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

The square root of 6717121 is about 2591.7409206940. The cubic root of 6717121 is about 188.6808064724.

Subtracting from 6717121 its reverse (1217176), we obtain a palindrome (5499945).

The spelling of 6717121 in words is "six million, seven hundred seventeen thousand, one hundred twenty-one".