6997399 has 4 divisors (see below), whose sum is σ = 7047880. Its totient is φ = 6946920.

The previous prime is 6997379. The next prime is 6997411. The reversal of 6997399 is 9937996.

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 6997399 - 2¹⁵ = 6964631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6997349) 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, 25032 + ... + 25309.

It is an arithmetic number, because the mean of its divisors is an integer number (1761970).

Almost surely, 2^6997399 is an apocalyptic number.

6997399 is a deficient number, since it is larger than the sum of its proper divisors (50481).

6997399 is a wasteful number, since it uses less digits than its factorization.

6997399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50480.

The product of its digits is 826686, while the sum is 52.

The square root of 6997399 is about 2645.2597225981. The cubic root of 6997399 is about 191.2694223230.

It can be divided in two parts, 6997 and 399, that added together give a square (7396 = 86²).

The spelling of 6997399 in words is "six million, nine hundred ninety-seven thousand, three hundred ninety-nine".