6985660 has 48 divisors (see below), whose sum is σ = 16202592. Its totient is φ = 2508800.

The previous prime is 6985639. The next prime is 6985679. The reversal of 6985660 is 665896.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24720 + ... + 25000.

It is an arithmetic number, because the mean of its divisors is an integer number (337554).

Almost surely, 2^6985660 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 6985660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8101296).

6985660 is an abundant number, since it is smaller than the sum of its proper divisors (9216932).

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

6985660 is a wasteful number, since it uses less digits than its factorization.

6985660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414 (or 412 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 6985660 is about 2643.0399164598. The cubic root of 6985660 is about 191.1624031046.

The spelling of 6985660 in words is "six million, nine hundred eighty-five thousand, six hundred sixty".