2587420705 has 8 divisors (see below), whose sum is σ = 3105447912. Its totient is φ = 2069574528.

The previous prime is 2587420651. The next prime is 2587420721. The reversal of 2587420705 is 5070247852.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1347183616 + 1240237089 = 36704^2 + 35217^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2587420705 - 2²³ = 2579032097 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11524 + ... + 72853.

It is an arithmetic number, because the mean of its divisors is an integer number (388180989).

Almost surely, 2^2587420705 is an apocalyptic number.

It is an amenable number.

2587420705 is a deficient number, since it is larger than the sum of its proper divisors (518027207).

2587420705 is an equidigital number, since it uses as much as digits as its factorization.

2587420705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90515.

The product of its (nonzero) digits is 156800, while the sum is 40.

The square root of 2587420705 is about 50866.6954401404. The cubic root of 2587420705 is about 1372.8476660252.

The spelling of 2587420705 in words is "two billion, five hundred eighty-seven million, four hundred twenty thousand, seven hundred five".