8100660 has 48 divisors (see below), whose sum is σ = 22982400. Its totient is φ = 2131584.

The previous prime is 8100643. The next prime is 8100661. The reversal of 8100660 is 660018.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8100661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3886 + ... + 5594.

It is an arithmetic number, because the mean of its divisors is an integer number (478800).

Almost surely, 2^8100660 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 8100660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11491200).

8100660 is an abundant number, since it is smaller than the sum of its proper divisors (14881740).

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

8100660 is a wasteful number, since it uses less digits than its factorization.

8100660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800 (or 1798 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 8100660 is about 2846.1658419706. The cubic root of 8100660 is about 200.8353395154.

Adding to 8100660 its reverse (660018), we get a palindrome (8760678).

The spelling of 8100660 in words is "eight million, one hundred thousand, six hundred sixty".