505870 has 8 divisors (see below), whose sum is σ = 910584. Its totient is φ = 202344.

The previous prime is 505867. The next prime is 505871. The reversal of 505870 is 78505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25284 + ... + 25303.

It is an arithmetic number, because the mean of its divisors is an integer number (113823).

2⁵⁰⁵⁸⁷⁰ is an apocalyptic number.

505870 is a deficient number, since it is larger than the sum of its proper divisors (404714).

505870 is a wasteful number, since it uses less digits than its factorization.

505870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50594.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 505870 is about 711.2453866283. The cubic root of 505870 is about 79.6794464500.

The spelling of 505870 in words is "five hundred five thousand, eight hundred seventy".