6681500 has 96 divisors (see below), whose sum is σ = 17611776. Its totient is φ = 2164800.

The previous prime is 6681491. The next prime is 6681511. The reversal of 6681500 is 51866.

It is a self number, because there is not a number n which added to its sum of digits gives 6681500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80459 + ... + 80541.

It is an arithmetic number, because the mean of its divisors is an integer number (183456).

Almost surely, 2^6681500 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 6681500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8805888).

6681500 is an abundant number, since it is smaller than the sum of its proper divisors (10930276).

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

6681500 is a wasteful number, since it uses less digits than its factorization.

6681500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 6681500 is about 2584.8597640878. The cubic root of 6681500 is about 188.3466893879.

The spelling of 6681500 in words is "six million, six hundred eighty-one thousand, five hundred".