6997121 has 8 divisors (see below), whose sum is σ = 7156800. Its totient is φ = 6839280.

The previous prime is 6997117. The next prime is 6997139. The reversal of 6997121 is 1217996.

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

It is a cyclic number.

It is not a de Polignac number, because 6997121 - 2² = 6997117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6997171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9515 + ... + 10223.

It is an arithmetic number, because the mean of its divisors is an integer number (894600).

Almost surely, 2^6997121 is an apocalyptic number.

It is an amenable number.

6997121 is a deficient number, since it is larger than the sum of its proper divisors (159679).

6997121 is a wasteful number, since it uses less digits than its factorization.

6997121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919.

The product of its digits is 6804, while the sum is 35.

The square root of 6997121 is about 2645.2071752511. The cubic root of 6997121 is about 191.2668893054.

The spelling of 6997121 in words is "six million, nine hundred ninety-seven thousand, one hundred twenty-one".