2665880 has 32 divisors (see below), whose sum is σ = 6855840. Its totient is φ = 913920.

The previous prime is 2665879. The next prime is 2665891. The reversal of 2665880 is 885662.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 2665880.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4481 + ... + 5040.

It is an arithmetic number, because the mean of its divisors is an integer number (214245).

2^2665880 is an apocalyptic number.

2665880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2665880 is an abundant number, since it is smaller than the sum of its proper divisors (4189960).

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

2665880 is a wasteful number, since it uses less digits than its factorization.

2665880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9539 (or 9535 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 2665880 is about 1632.7522775976. The cubic root of 2665880 is about 138.6586174240.

The spelling of 2665880 in words is "two million, six hundred sixty-five thousand, eight hundred eighty".