6991056 has 40 divisors (see below), whose sum is σ = 20068160. Its totient is φ = 2330208.

The previous prime is 6991043. The next prime is 6991091. The reversal of 6991056 is 6501996.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 6991056.

It is a congruent number.

It is an unprimeable number.

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, 7660 + ... + 8523.

It is an arithmetic number, because the mean of its divisors is an integer number (501704).

Almost surely, 2^6991056 is an apocalyptic number.

It is an amenable number.

6991056 is an abundant number, since it is smaller than the sum of its proper divisors (13077104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6991056 is a wasteful number, since it uses less digits than its factorization.

6991056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16200 (or 16188 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 6991056 is about 2644.0605136797. The cubic root of 6991056 is about 191.2116109030.

It can be divided in two parts, 69 and 91056, that added together give a cube (91125 = 45³).

The spelling of 6991056 in words is "six million, nine hundred ninety-one thousand, fifty-six".