6485487857 has 16 divisors (see below), whose sum is σ = 6834432000. Its totient is φ = 6148278864.

The previous prime is 6485487823. The next prime is 6485487863. The reversal of 6485487857 is 7587845846.

It is a cyclic number.

It is not a de Polignac number, because 6485487857 - 2²⁴ = 6468710641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6485487857.

It is not an unprimeable number, because it can be changed into a prime (6485487817) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 184244 + ... + 216602.

It is an arithmetic number, because the mean of its divisors is an integer number (427152000).

Almost surely, 2^6485487857 is an apocalyptic number.

It is an amenable number.

6485487857 is a deficient number, since it is larger than the sum of its proper divisors (348944143).

6485487857 is a wasteful number, since it uses less digits than its factorization.

6485487857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32540.

The product of its digits is 60211200, while the sum is 62.

The square root of 6485487857 is about 80532.5267019482. The cubic root of 6485487857 is about 1864.8656528370.

The spelling of 6485487857 in words is "six billion, four hundred eighty-five million, four hundred eighty-seven thousand, eight hundred fifty-seven".