2202765 has 32 divisors (see below), whose sum is σ = 3801600. Its totient is φ = 1085760.

The previous prime is 2202763. The next prime is 2202787. The reversal of 2202765 is 5672022.

It is not a de Polignac number, because 2202765 - 2¹ = 2202763 is a prime.

It is an Ulam number.

2202765 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2202763) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16750 + ... + 16880.

It is an arithmetic number, because the mean of its divisors is an integer number (118800).

2^2202765 is an apocalyptic number.

It is an amenable number.

2202765 is a deficient number, since it is larger than the sum of its proper divisors (1598835).

2202765 is a wasteful number, since it uses less digits than its factorization.

2202765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 2202765 is about 1484.1714860487. The cubic root of 2202765 is about 130.1136087736.

Adding to 2202765 its reverse (5672022), we get a palindrome (7874787).

It can be divided in two parts, 2202 and 765, that multiplied together give a triangular number (1684530 = T₁₈₃₅).

The spelling of 2202765 in words is "two million, two hundred two thousand, seven hundred sixty-five".