6991246 has 4 divisors (see below), whose sum is σ = 10486872. Its totient is φ = 3495622.

The previous prime is 6991147. The next prime is 6991253. The reversal of 6991246 is 6421996.

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

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1747810 + ... + 1747813.

It is an arithmetic number, because the mean of its divisors is an integer number (2621718).

Almost surely, 2^6991246 is an apocalyptic number.

6991246 is a deficient number, since it is larger than the sum of its proper divisors (3495626).

6991246 is a wasteful number, since it uses less digits than its factorization.

6991246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3495625.

The product of its digits is 23328, while the sum is 37.

The square root of 6991246 is about 2644.0964430217. The cubic root of 6991246 is about 191.2133431104.

The spelling of 6991246 in words is "six million, nine hundred ninety-one thousand, two hundred forty-six".