6710721 has 4 divisors (see below), whose sum is σ = 8947632. Its totient is φ = 4473812.

The previous prime is 6710677. The next prime is 6710723. The reversal of 6710721 is 1270176.

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.

It is a cyclic number.

It is not a de Polignac number, because 6710721 - 2⁶ = 6710657 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 6710691 and 6710700.

It is not an unprimeable number, because it can be changed into a prime (6710723) 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, 1118451 + ... + 1118456.

It is an arithmetic number, because the mean of its divisors is an integer number (2236908).

Almost surely, 2^6710721 is an apocalyptic number.

It is an amenable number.

6710721 is a deficient number, since it is larger than the sum of its proper divisors (2236911).

6710721 is a wasteful number, since it uses less digits than its factorization.

6710721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236910.

The product of its (nonzero) digits is 588, while the sum is 24.

The square root of 6710721 is about 2590.5059351409. The cubic root of 6710721 is about 188.6208630889.

Adding to 6710721 its reverse (1270176), we get a palindrome (7980897).

The spelling of 6710721 in words is "six million, seven hundred ten thousand, seven hundred twenty-one".