6991848 has 72 divisors (see below), whose sum is σ = 20059650. Its totient is φ = 2199744.

The previous prime is 6991847. The next prime is 6991877. The reversal of 6991848 is 8481996.

It can be written as a sum of positive squares in only one way, i.e., 6874884 + 116964 = 2622^2 + 342^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (6991841) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 25858 + ... + 26126.

Almost surely, 2^6991848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6991848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10029825).

6991848 is an abundant number, since it is smaller than the sum of its proper divisors (13067802).

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

6991848 is a wasteful number, since it uses less digits than its factorization.

6991848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319 (or 293 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 6991848 is about 2644.2102790815. The cubic root of 6991848 is about 191.2188312656.

The spelling of 6991848 in words is "six million, nine hundred ninety-one thousand, eight hundred forty-eight".