2760561 has 20 divisors (see below), whose sum is σ = 4168692. Its totient is φ = 1820448.

The previous prime is 2760559. The next prime is 2760577. The reversal of 2760561 is 1650672.

It can be written as a sum of positive squares in 2 ways, for example, as 2624400 + 136161 = 1620^2 + 369^2 .

It is not a de Polignac number, because 2760561 - 2¹ = 2760559 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2760521) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13915 + ... + 14111.

2^2760561 is an apocalyptic number.

It is an amenable number.

2760561 is a deficient number, since it is larger than the sum of its proper divisors (1408131).

2760561 is a wasteful number, since it uses less digits than its factorization.

2760561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 2760561 is about 1661.4936051637. The cubic root of 2760561 is about 140.2810849340.

It can be divided in two parts, 2760 and 561, that added together give a triangular number (3321 = T₈₁).

The spelling of 2760561 in words is "two million, seven hundred sixty thousand, five hundred sixty-one".