6671888 has 40 divisors (see below), whose sum is σ = 14418720. Its totient is φ = 2972160.

The previous prime is 6671881. The next prime is 6671891. The reversal of 6671888 is 8881766.

It is a Cunningham number, because it is equal to 2583²-1.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6671881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4523 + ... + 5813.

It is an arithmetic number, because the mean of its divisors is an integer number (360468).

Almost surely, 2^6671888 is an apocalyptic number.

6671888 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6671888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7209360).

6671888 is an abundant number, since it is smaller than the sum of its proper divisors (7746832).

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

6671888 is a wasteful number, since it uses less digits than its factorization.

6671888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335 (or 1329 counting only the distinct ones).

The product of its digits is 129024, while the sum is 44.

The square root of 6671888 is about 2582.9998064266. Note that the first 3 decimals coincide. The cubic root of 6671888 is about 188.2563275822.

The spelling of 6671888 in words is "six million, six hundred seventy-one thousand, eight hundred eighty-eight".