8563487157 has 8 divisors (see below), whose sum is σ = 12686647680. Its totient is φ = 5708991420.

The previous prime is 8563487081. The next prime is 8563487171. The reversal of 8563487157 is 7517843658.

It is a happy number.

8563487157 is a `hidden beast` number, since 8 + 5 + 6 + 3 + 487 + 157 = 666.

It is not a de Polignac number, because 8563487157 - 2¹⁰ = 8563486133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8563483157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158583069 + ... + 158583122.

It is an arithmetic number, because the mean of its divisors is an integer number (1585830960).

Almost surely, 2^8563487157 is an apocalyptic number.

It is an amenable number.

8563487157 is a deficient number, since it is larger than the sum of its proper divisors (4123160523).

8563487157 is a wasteful number, since it uses less digits than its factorization.

8563487157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317166200 (or 317166194 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 54.

The square root of 8563487157 is about 92539.1114988684. Note that the first 3 decimals coincide. The cubic root of 8563487157 is about 2045.8959858888.

The spelling of 8563487157 in words is "eight billion, five hundred sixty-three million, four hundred eighty-seven thousand, one hundred fifty-seven".