6991048 has 16 divisors (see below), whose sum is σ = 13304880. Its totient is φ = 3443088.

The previous prime is 6991043. The next prime is 6991091. The reversal of 6991048 is 8401996.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 6990998 and 6991016.

It is not an unprimeable number, because it can be changed into a prime (6991043) 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 3 ways as a sum of consecutive naturals, for example, 5986 + ... + 7057.

It is an arithmetic number, because the mean of its divisors is an integer number (831555).

Almost surely, 2^6991048 is an apocalyptic number.

It is an amenable number.

6991048 is a deficient number, since it is larger than the sum of its proper divisors (6313832).

6991048 is a wasteful number, since it uses less digits than its factorization.

6991048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13116 (or 13112 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 6991048 is about 2644.0590008546. The cubic root of 6991048 is about 191.2115379673.

The spelling of 6991048 in words is "six million, nine hundred ninety-one thousand, forty-eight".