8091660 has 48 divisors (see below), whose sum is σ = 23992416. Its totient is φ = 2030592.

The previous prime is 8091617. The next prime is 8091679. The reversal of 8091660 is 661908.

8091660 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 2947 + ... + 4986.

It is an arithmetic number, because the mean of its divisors is an integer number (499842).

Almost surely, 2^8091660 is an apocalyptic number.

It is an amenable number.

8091660 is an abundant number, since it is smaller than the sum of its proper divisors (15900756).

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

8091660 is a wasteful number, since it uses less digits than its factorization.

8091660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7962 (or 7960 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 8091660 is about 2844.5843281576. The cubic root of 8091660 is about 200.7609345547.

The spelling of 8091660 in words is "eight million, ninety-one thousand, six hundred sixty".