505536687 has 16 divisors (see below), whose sum is σ = 749290080. Its totient is φ = 336868416.

The previous prime is 505536617. The next prime is 505536697. The reversal of 505536687 is 786635505.

505536687 is a `hidden beast` number, since 50 + 5 + 536 + 68 + 7 = 666.

It is not a de Polignac number, because 505536687 - 2¹⁰ = 505535663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505536617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107673 + ... + 112269.

It is an arithmetic number, because the mean of its divisors is an integer number (46830630).

Almost surely, 2^505536687 is an apocalyptic number.

505536687 is a deficient number, since it is larger than the sum of its proper divisors (243753393).

505536687 is a wasteful number, since it uses less digits than its factorization.

505536687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8679 (or 8673 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

The square root of 505536687 is about 22484.1430123543. The cubic root of 505536687 is about 796.6194259164.

The spelling of 505536687 in words is "five hundred five million, five hundred thirty-six thousand, six hundred eighty-seven".