2578870717 has 4 divisors (see below), whose sum is σ = 2582647200. Its totient is φ = 2575094236.

The previous prime is 2578870711. The next prime is 2578870739. The reversal of 2578870717 is 7170788752.

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 2578870717 - 2³¹ = 431387069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2578870711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1887217 + ... + 1888582.

It is an arithmetic number, because the mean of its divisors is an integer number (645661800).

Almost surely, 2^2578870717 is an apocalyptic number.

It is an amenable number.

2578870717 is a deficient number, since it is larger than the sum of its proper divisors (3776483).

2578870717 is an equidigital number, since it uses as much as digits as its factorization.

2578870717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3776482.

The product of its (nonzero) digits is 1536640, while the sum is 52.

The square root of 2578870717 is about 50782.5828114325. The cubic root of 2578870717 is about 1371.3338310520. Note that the first 3 decimals are identical.

The spelling of 2578870717 in words is "two billion, five hundred seventy-eight million, eight hundred seventy thousand, seven hundred seventeen".