2866321 has 8 divisors (see below), whose sum is σ = 3034080. Its totient is φ = 2700288.

The previous prime is 2866309. The next prime is 2866333. The reversal of 2866321 is 1236682.

It is an interprime number because it is at equal distance from previous prime (2866309) and next prime (2866333).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2866321 - 2⁵ = 2866289 is a prime.

It is a Duffinian number.

2866321 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2866321.

It is not an unprimeable number, because it can be changed into a prime (2866121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4590 + ... + 5176.

It is an arithmetic number, because the mean of its divisors is an integer number (379260).

2^2866321 is an apocalyptic number.

It is an amenable number.

2866321 is a deficient number, since it is larger than the sum of its proper divisors (167759).

2866321 is a wasteful number, since it uses less digits than its factorization.

2866321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863.

The product of its digits is 3456, while the sum is 28.

The square root of 2866321 is about 1693.0212638948. The cubic root of 2866321 is about 142.0501211682.

The spelling of 2866321 in words is "two million, eight hundred sixty-six thousand, three hundred twenty-one".