6708399 has 4 divisors (see below), whose sum is σ = 8944536. Its totient is φ = 4472264.

The previous prime is 6708397. The next prime is 6708409. The reversal of 6708399 is 9938076.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6708399 - 2¹ = 6708397 is a prime.

It is a D-number.

6708399 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6708399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6708397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1118064 + ... + 1118069.

It is an arithmetic number, because the mean of its divisors is an integer number (2236134).

Almost surely, 2^6708399 is an apocalyptic number.

6708399 is a deficient number, since it is larger than the sum of its proper divisors (2236137).

6708399 is a wasteful number, since it uses less digits than its factorization.

6708399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2236136.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 6708399 is about 2590.0577213645. The cubic root of 6708399 is about 188.5991054582.

The spelling of 6708399 in words is "six million, seven hundred eight thousand, three hundred ninety-nine".