6991113 has 8 divisors (see below), whose sum is σ = 9573568. Its totient is φ = 4534704.

The previous prime is 6991111. The next prime is 6991129. The reversal of 6991113 is 3111996.

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

It is not a de Polignac number, because 6991113 - 2¹ = 6991111 is a prime.

It is a super-4 number, since 4×6991113⁴ (a number of 28 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6991111) 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, 31381 + ... + 31602.

It is an arithmetic number, because the mean of its divisors is an integer number (1196696).

Almost surely, 2^6991113 is an apocalyptic number.

It is an amenable number.

6991113 is a deficient number, since it is larger than the sum of its proper divisors (2582455).

6991113 is a wasteful number, since it uses less digits than its factorization.

6991113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63023.

The product of its digits is 1458, while the sum is 30.

The square root of 6991113 is about 2644.0712925335. The cubic root of 6991113 is about 191.2121305685.

The spelling of 6991113 in words is "six million, nine hundred ninety-one thousand, one hundred thirteen".