2165763 has 4 divisors (see below), whose sum is σ = 2887688. Its totient is φ = 1443840.

The previous prime is 2165747. The next prime is 2165771. The reversal of 2165763 is 3675612.

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

It is not a de Polignac number, because 2165763 - 2⁴ = 2165747 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2165763.

It is not an unprimeable number, because it can be changed into a prime (2165773) 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, 360958 + ... + 360963.

It is an arithmetic number, because the mean of its divisors is an integer number (721922).

2^2165763 is an apocalyptic number.

2165763 is a deficient number, since it is larger than the sum of its proper divisors (721925).

2165763 is an equidigital number, since it uses as much as digits as its factorization.

2165763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721924.

The product of its digits is 7560, while the sum is 30.

The square root of 2165763 is about 1471.6531520708. The cubic root of 2165763 is about 129.3809423395.

The spelling of 2165763 in words is "two million, one hundred sixty-five thousand, seven hundred sixty-three".