2822863 has 4 divisors (see below), whose sum is σ = 2829600. Its totient is φ = 2816128.

The previous prime is 2822857. The next prime is 2822879. The reversal of 2822863 is 3682282.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3682282 = 2 ⋅1841141.

It is a de Polignac number, because none of the positive numbers 2^k-2822863 is a prime.

It is a Duffinian number.

2822863 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2822893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2695 + ... + 3592.

It is an arithmetic number, because the mean of its divisors is an integer number (707400).

2^2822863 is an apocalyptic number.

2822863 is a deficient number, since it is larger than the sum of its proper divisors (6737).

2822863 is an equidigital number, since it uses as much as digits as its factorization.

2822863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6736.

The product of its digits is 9216, while the sum is 31.

The square root of 2822863 is about 1680.1377919683. The cubic root of 2822863 is about 141.3285599482.

The spelling of 2822863 in words is "two million, eight hundred twenty-two thousand, eight hundred sixty-three".