2520705567 has 4 divisors (see below), whose sum is σ = 3360940760. Its totient is φ = 1680470376.

The previous prime is 2520705559. The next prime is 2520705587. The reversal of 2520705567 is 7655070252.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2520705567 - 2³ = 2520705559 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 (2520705587) 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, 420117592 + ... + 420117597.

It is an arithmetic number, because the mean of its divisors is an integer number (840235190).

Almost surely, 2^2520705567 is an apocalyptic number.

2520705567 is a deficient number, since it is larger than the sum of its proper divisors (840235193).

2520705567 is an equidigital number, since it uses as much as digits as its factorization.

2520705567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840235192.

The product of its (nonzero) digits is 147000, while the sum is 39.

The square root of 2520705567 is about 50206.6287157383. The cubic root of 2520705567 is about 1360.9454151188.

The spelling of 2520705567 in words is "two billion, five hundred twenty million, seven hundred five thousand, five hundred sixty-seven".