2863645 has 16 divisors (see below), whose sum is σ = 3593520. Its totient is φ = 2188800.

The previous prime is 2863607. The next prime is 2863649. The reversal of 2863645 is 5463682.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 423801 + 2439844 = 651^2 + 1562^2 .

It is not a de Polignac number, because 2863645 - 2⁷ = 2863517 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2863645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2863649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12391 + ... + 12619.

It is an arithmetic number, because the mean of its divisors is an integer number (224595).

2^2863645 is an apocalyptic number.

It is an amenable number.

2863645 is a deficient number, since it is larger than the sum of its proper divisors (729875).

2863645 is a wasteful number, since it uses less digits than its factorization.

2863645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336.

The product of its digits is 34560, while the sum is 34.

The square root of 2863645 is about 1692.2307762241. The cubic root of 2863645 is about 142.0059013616.

The spelling of 2863645 in words is "two million, eight hundred sixty-three thousand, six hundred forty-five".