6899997 has 8 divisors (see below), whose sum is σ = 9907744. Its totient is φ = 4246128.

The previous prime is 6899989. The next prime is 6900001. The reversal of 6899997 is 7999986.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6899997 - 2³ = 6899989 is a prime.

It is a Duffinian number.

6899997 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6899947) 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 7 ways as a sum of consecutive naturals, for example, 88423 + ... + 88500.

It is an arithmetic number, because the mean of its divisors is an integer number (1238468).

Almost surely, 2^6899997 is an apocalyptic number.

It is an amenable number.

6899997 is a deficient number, since it is larger than the sum of its proper divisors (3007747).

6899997 is a wasteful number, since it uses less digits than its factorization.

6899997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176939.

The product of its digits is 2204496, while the sum is 57.

The square root of 6899997 is about 2626.7845362724. The cubic root of 6899997 is about 190.3777986053.

It can be divided in two parts, 68999 and 97, that added together give a palindrome (69096).

The spelling of 6899997 in words is "six million, eight hundred ninety-nine thousand, nine hundred ninety-seven".