2759660645 has 24 divisors (see below), whose sum is σ = 3854560248. Its totient is φ = 1891209600.

The previous prime is 2759660593. The next prime is 2759660653. The reversal of 2759660645 is 5460669572.

It can be written as a sum of positive squares in 4 ways, for example, as 1940449 + 2757720196 = 1393^2 + 52514^2 .

It is not a de Polignac number, because 2759660645 - 2⁶ = 2759660581 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2759660593 and 2759660602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 777575 + ... + 781115.

It is an arithmetic number, because the mean of its divisors is an integer number (160606677).

Almost surely, 2^2759660645 is an apocalyptic number.

It is an amenable number.

2759660645 is a deficient number, since it is larger than the sum of its proper divisors (1094899603).

2759660645 is a wasteful number, since it uses less digits than its factorization.

2759660645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6741 (or 6734 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 50.

The square root of 2759660645 is about 52532.4722909554. The cubic root of 2759660645 is about 1402.6583241713.

The spelling of 2759660645 in words is "two billion, seven hundred fifty-nine million, six hundred sixty thousand, six hundred forty-five".