2871660 has 96 divisors (see below), whose sum is σ = 9273600. Its totient is φ = 656640.

The previous prime is 2871643. The next prime is 2871689. The reversal of 2871660 is 661782.

It is a happy number.

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 31 ways as a sum of consecutive naturals, for example, 12426 + ... + 12654.

It is an arithmetic number, because the mean of its divisors is an integer number (96600).

2^2871660 is an apocalyptic number.

2871660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2871660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4636800).

2871660 is an abundant number, since it is smaller than the sum of its proper divisors (6401940).

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

2871660 is a wasteful number, since it uses less digits than its factorization.

2871660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 2871660 is about 1694.5972972951. The cubic root of 2871660 is about 142.1382637963.

The spelling of 2871660 in words is "two million, eight hundred seventy-one thousand, six hundred sixty".