6717999 has 4 divisors (see below), whose sum is σ = 8957336. Its totient is φ = 4478664.

The previous prime is 6717961. The next prime is 6718003. The reversal of 6717999 is 9997176.

6717999 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6717999 - 2¹⁷ = 6586927 is a prime.

It is a super-4 number, since 4×6717999⁴ (a number of 28 digits) contains 4444 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6717959) 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 3 ways as a sum of consecutive naturals, for example, 1119664 + ... + 1119669.

It is an arithmetic number, because the mean of its divisors is an integer number (2239334).

Almost surely, 2^6717999 is an apocalyptic number.

6717999 is a deficient number, since it is larger than the sum of its proper divisors (2239337).

6717999 is a wasteful number, since it uses less digits than its factorization.

6717999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2239336.

The product of its digits is 214326, while the sum is 48.

The square root of 6717999 is about 2591.9102993738. The cubic root of 6717999 is about 188.6890269849.

The spelling of 6717999 in words is "six million, seven hundred seventeen thousand, nine hundred ninety-nine".