2560685 has 4 divisors (see below), whose sum is σ = 3072828. Its totient is φ = 2048544.

The previous prime is 2560669. The next prime is 2560697. The reversal of 2560685 is 5860652.

It is a happy number.

2560685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1582564 + 978121 = 1258^2 + 989^2 .

It is a cyclic number.

It is not a de Polignac number, because 2560685 - 2⁴ = 2560669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 256064 + ... + 256073.

It is an arithmetic number, because the mean of its divisors is an integer number (768207).

2^2560685 is an apocalyptic number.

It is an amenable number.

2560685 is a deficient number, since it is larger than the sum of its proper divisors (512143).

2560685 is an equidigital number, since it uses as much as digits as its factorization.

2560685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512142.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 2560685 is about 1600.2140481823. The cubic root of 2560685 is about 136.8102760369.

The spelling of 2560685 in words is "two million, five hundred sixty thousand, six hundred eighty-five".