2560691 has 6 divisors (see below), whose sum is σ = 2978820. Its totient is φ = 2194836.

The previous prime is 2560669. The next prime is 2560697. The reversal of 2560691 is 1960652.

2560691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2560691 - 2¹⁴ = 2544307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2560697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26081 + ... + 26178.

It is an arithmetic number, because the mean of its divisors is an integer number (496470).

2^2560691 is an apocalyptic number.

2560691 is a deficient number, since it is larger than the sum of its proper divisors (418129).

2560691 is an equidigital number, since it uses as much as digits as its factorization.

2560691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52273 (or 52266 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 2560691 is about 1600.2159229304. The cubic root of 2560691 is about 136.8103828912.

The spelling of 2560691 in words is "two million, five hundred sixty thousand, six hundred ninety-one".