2520647859 has 8 divisors (see below), whose sum is σ = 3361177600. Its totient is φ = 1680275016.

The previous prime is 2520647849. The next prime is 2520647881. The reversal of 2520647859 is 9587460252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2520647859 - 2¹⁷ = 2520516787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2520647849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5574 + ... + 71220.

It is an arithmetic number, because the mean of its divisors is an integer number (420147200).

Almost surely, 2^2520647859 is an apocalyptic number.

2520647859 is a deficient number, since it is larger than the sum of its proper divisors (840529741).

2520647859 is a wasteful number, since it uses less digits than its factorization.

2520647859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78449.

The product of its (nonzero) digits is 1209600, while the sum is 48.

The square root of 2520647859 is about 50206.0540074601. The cubic root of 2520647859 is about 1360.9350293974.

The spelling of 2520647859 in words is "two billion, five hundred twenty million, six hundred forty-seven thousand, eight hundred fifty-nine".