2864215 has 4 divisors (see below), whose sum is σ = 3437064. Its totient is φ = 2291368.

The previous prime is 2864209. The next prime is 2864221. The reversal of 2864215 is 5124682.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2864209) and next prime (2864221).

It is a cyclic number.

It is not a de Polignac number, because 2864215 - 2⁷ = 2864087 is a prime.

It is a Duffinian number.

2864215 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286417 + ... + 286426.

It is an arithmetic number, because the mean of its divisors is an integer number (859266).

2^2864215 is an apocalyptic number.

2864215 is a deficient number, since it is larger than the sum of its proper divisors (572849).

2864215 is an equidigital number, since it uses as much as digits as its factorization.

2864215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572848.

The product of its digits is 3840, while the sum is 28.

The square root of 2864215 is about 1692.3991845897. The cubic root of 2864215 is about 142.0153226869.

Adding to 2864215 its reverse (5124682), we get a palindrome (7988897).

The spelling of 2864215 in words is "two million, eight hundred sixty-four thousand, two hundred fifteen".