6891948 has 54 divisors (see below), whose sum is σ = 20270796. Its totient is φ = 1968624.

The previous prime is 6891943. The next prime is 6891949. The reversal of 6891948 is 8491986.

It is not an unprimeable number, because it can be changed into a prime (6891943) 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 17 ways as a sum of consecutive naturals, for example, 190 + ... + 3717.

Almost surely, 2^6891948 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 6891948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10135398).

6891948 is an abundant number, since it is smaller than the sum of its proper divisors (13378848).

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

6891948 is a wasteful number, since it uses less digits than its factorization.

6891948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3931 (or 3919 counting only the distinct ones).

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

The square root of 6891948 is about 2625.2519879052. The cubic root of 6891948 is about 190.3037431563.

The spelling of 6891948 in words is "six million, eight hundred ninety-one thousand, nine hundred forty-eight".