8487685571 has 2 divisors, whose sum is σ = 8487685572. Its totient is φ = 8487685570.

The previous prime is 8487685513. The next prime is 8487685601. The reversal of 8487685571 is 1755867848.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8487685571 - 2²⁶ = 8420576707 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8487685571.

It is not a weakly prime, because it can be changed into another prime (8487685501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4243842785 + 4243842786.

It is an arithmetic number, because the mean of its divisors is an integer number (4243842786).

Almost surely, 2^8487685571 is an apocalyptic number.

8487685571 is a deficient number, since it is larger than the sum of its proper divisors (1).

8487685571 is an equidigital number, since it uses as much as digits as its factorization.

8487685571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15052800, while the sum is 59.

The square root of 8487685571 is about 92128.6359988033. The cubic root of 8487685571 is about 2039.8415206728.

The spelling of 8487685571 in words is "eight billion, four hundred eighty-seven million, six hundred eighty-five thousand, five hundred seventy-one".