2665868 has 6 divisors (see below), whose sum is σ = 4665276. Its totient is φ = 1332932.

The previous prime is 2665867. The next prime is 2665879. The reversal of 2665868 is 8685662.

It is not an unprimeable number, because it can be changed into a prime (2665867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333230 + ... + 333237.

It is an arithmetic number, because the mean of its divisors is an integer number (777546).

2^2665868 is an apocalyptic number.

It is an amenable number.

2665868 is a deficient number, since it is larger than the sum of its proper divisors (1999408).

2665868 is a wasteful number, since it uses less digits than its factorization.

2665868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666471 (or 666469 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 2665868 is about 1632.7486028167. The cubic root of 2665868 is about 138.6584093743.

The spelling of 2665868 in words is "two million, six hundred sixty-five thousand, eight hundred sixty-eight".