2866660 has 12 divisors (see below), whose sum is σ = 6020028. Its totient is φ = 1146656.

The previous prime is 2866657. The next prime is 2866667. The reversal of 2866660 is 666682.

It can be written as a sum of positive squares in 2 ways, for example, as 357604 + 2509056 = 598^2 + 1584^2 .

It is not an unprimeable number, because it can be changed into a prime (2866667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71647 + ... + 71686.

It is an arithmetic number, because the mean of its divisors is an integer number (501669).

2^2866660 is an apocalyptic number.

2866660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2866660 is an abundant number, since it is smaller than the sum of its proper divisors (3153368).

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

2866660 is a wasteful number, since it uses less digits than its factorization.

2866660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143342 (or 143340 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 2866660 is about 1693.1213778108. The cubic root of 2866660 is about 142.0557210403.

The spelling of 2866660 in words is "two million, eight hundred sixty-six thousand, six hundred sixty".