2560777 has 4 divisors (see below), whose sum is σ = 2604240. Its totient is φ = 2517316.

The previous prime is 2560759. The next prime is 2560783. The reversal of 2560777 is 7770652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2560777 - 2¹¹ = 2558729 is a prime.

It is a Duffinian number.

2560777 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2563777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21643 + ... + 21760.

It is an arithmetic number, because the mean of its divisors is an integer number (651060).

2^2560777 is an apocalyptic number.

It is an amenable number.

2560777 is a deficient number, since it is larger than the sum of its proper divisors (43463).

2560777 is an equidigital number, since it uses as much as digits as its factorization.

2560777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43462.

The product of its (nonzero) digits is 20580, while the sum is 34.

The square root of 2560777 is about 1600.2427940784. The cubic root of 2560777 is about 136.8119144520.

The spelling of 2560777 in words is "two million, five hundred sixty thousand, seven hundred seventy-seven".