8111660 has 24 divisors (see below), whose sum is σ = 17115840. Its totient is φ = 3229184.

The previous prime is 8111659. The next prime is 8111681. The reversal of 8111660 is 661118.

It is a happy number.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3932 + ... + 5628.

It is an arithmetic number, because the mean of its divisors is an integer number (713160).

Almost surely, 2^8111660 is an apocalyptic number.

It is an amenable number.

8111660 is an abundant number, since it is smaller than the sum of its proper divisors (9004180).

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

8111660 is a wasteful number, since it uses less digits than its factorization.

8111660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1945 (or 1943 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 8111660 is about 2848.0976106868. The cubic root of 8111660 is about 200.9262041085.

Adding to 8111660 its reverse (661118), we get a palindrome (8772778).

The spelling of 8111660 in words is "eight million, one hundred eleven thousand, six hundred sixty".