2001760765 has 4 divisors (see below), whose sum is σ = 2402112924. Its totient is φ = 1601408608.

The previous prime is 2001760729. The next prime is 2001760769. The reversal of 2001760765 is 5670671002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1500090361 + 501670404 = 38731^2 + 22398^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001760765 - 2⁹ = 2001760253 is a prime.

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 2001760765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001760769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200176072 + ... + 200176081.

It is an arithmetic number, because the mean of its divisors is an integer number (600528231).

Almost surely, 2^2001760765 is an apocalyptic number.

It is an amenable number.

2001760765 is a deficient number, since it is larger than the sum of its proper divisors (400352159).

2001760765 is an equidigital number, since it uses as much as digits as its factorization.

2001760765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400352158.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 2001760765 is about 44741.0411702723. The cubic root of 2001760765 is about 1260.2906789257.

The spelling of 2001760765 in words is "two billion, one million, seven hundred sixty thousand, seven hundred sixty-five".