8187660 has 72 divisors (see below), whose sum is σ = 26754000. Its totient is φ = 2014848.

The previous prime is 8187637. The next prime is 8187661. The reversal of 8187660 is 667818.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (8187661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 591 + ... + 4089.

Almost surely, 2^8187660 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 8187660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13377000).

8187660 is an abundant number, since it is smaller than the sum of its proper divisors (18566340).

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

8187660 is a wasteful number, since it uses less digits than its factorization.

8187660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3527 (or 3522 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 8187660 is about 2861.4087439581. The cubic root of 8187660 is about 201.5517623629.

The spelling of 8187660 in words is "eight million, one hundred eighty-seven thousand, six hundred sixty".