2863221 has 8 divisors (see below), whose sum is σ = 3828384. Its totient is φ = 1903440.

The previous prime is 2863207. The next prime is 2863229. The reversal of 2863221 is 1223682.

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

It is not a de Polignac number, because 2863221 - 2¹³ = 2855029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2863191 and 2863200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2863229) 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, 130 + ... + 2396.

It is an arithmetic number, because the mean of its divisors is an integer number (478548).

2^2863221 is an apocalyptic number.

It is an amenable number.

2863221 is a deficient number, since it is larger than the sum of its proper divisors (965163).

2863221 is a wasteful number, since it uses less digits than its factorization.

2863221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2691.

The product of its digits is 1152, while the sum is 24.

The square root of 2863221 is about 1692.1054931652. The cubic root of 2863221 is about 141.9988924069.

The spelling of 2863221 in words is "two million, eight hundred sixty-three thousand, two hundred twenty-one".