512869887 has 20 divisors (see below), whose sum is σ = 774758160. Its totient is φ = 338066784.

The previous prime is 512869879. The next prime is 512869891. The reversal of 512869887 is 788968215.

It is not a de Polignac number, because 512869887 - 2³ = 512869879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512869807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 28363 + ... + 42780.

It is an arithmetic number, because the mean of its divisors is an integer number (38737908).

Almost surely, 2^512869887 is an apocalyptic number.

512869887 is a deficient number, since it is larger than the sum of its proper divisors (261888273).

512869887 is an equidigital number, since it uses as much as digits as its factorization.

512869887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71244 (or 71235 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 54.

The square root of 512869887 is about 22646.6308090188. The cubic root of 512869887 is about 800.4528098016.

The spelling of 512869887 in words is "five hundred twelve million, eight hundred sixty-nine thousand, eight hundred eighty-seven".