8713431585 has 24 divisors (see below), whose sum is σ = 15105452544. Its totient is φ = 4646495520.

The previous prime is 8713431541. The next prime is 8713431589. The reversal of 8713431585 is 5851343178.

It is a happy number.

8713431585 is a `hidden beast` number, since 8 + 7 + 1 + 34 + 31 + 585 = 666.

It is not a de Polignac number, because 8713431585 - 2⁷ = 8713431457 is a prime.

It is a super-2 number, since 2×8713431585² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8713431585.

It is not an unprimeable number, because it can be changed into a prime (8713431589) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 609024 + ... + 623166.

It is an arithmetic number, because the mean of its divisors is an integer number (629393856).

Almost surely, 2^8713431585 is an apocalyptic number.

It is an amenable number.

8713431585 is a deficient number, since it is larger than the sum of its proper divisors (6392020959).

8713431585 is a wasteful number, since it uses less digits than its factorization.

8713431585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27845 (or 27842 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 8713431585 is about 93345.7636157100. The cubic root of 8713431585 is about 2057.7679963826.

The spelling of 8713431585 in words is "eight billion, seven hundred thirteen million, four hundred thirty-one thousand, five hundred eighty-five".