8281660 has 12 divisors (see below), whose sum is σ = 17391528. Its totient is φ = 3312656.

The previous prime is 8281643. The next prime is 8281687. The reversal of 8281660 is 661828.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207022 + ... + 207061.

It is an arithmetic number, because the mean of its divisors is an integer number (1449294).

Almost surely, 2^8281660 is an apocalyptic number.

It is an amenable number.

8281660 is an abundant number, since it is smaller than the sum of its proper divisors (9109868).

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

8281660 is a wasteful number, since it uses less digits than its factorization.

8281660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414092 (or 414090 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 8281660 is about 2877.7873444714. The cubic root of 8281660 is about 202.3201471726.

The spelling of 8281660 in words is "eight million, two hundred eighty-one thousand, six hundred sixty".