505066887 has 16 divisors (see below), whose sum is σ = 805805280. Its totient is φ = 310810176.

The previous prime is 505066847. The next prime is 505066921. The reversal of 505066887 is 788660505.

505066887 is a `hidden beast` number, since 5 + 0 + 506 + 68 + 87 = 666.

It is not a de Polignac number, because 505066887 - 2⁸ = 505066631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505066847) 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, 719118 + ... + 719819.

It is an arithmetic number, because the mean of its divisors is an integer number (50362830).

Almost surely, 2^505066887 is an apocalyptic number.

505066887 is a deficient number, since it is larger than the sum of its proper divisors (300738393).

505066887 is a wasteful number, since it uses less digits than its factorization.

505066887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438959 (or 1438953 counting only the distinct ones).

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

The square root of 505066887 is about 22473.6932211864. The cubic root of 505066887 is about 796.3725807927.

The spelling of 505066887 in words is "five hundred five million, sixty-six thousand, eight hundred eighty-seven".