505770 has 32 divisors (see below), whose sum is σ = 1268352. Its totient is φ = 128832.

The previous prime is 505763. The next prime is 505777. The reversal of 505770 is 77505.

It is an interprime number because it is at equal distance from previous prime (505763) and next prime (505777).

It is a self number, because there is not a number n which added to its sum of digits gives 505770.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 505770.

It is not an unprimeable number, because it can be changed into a prime (505777) by changing a digit.

505770 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 324 + ... + 1056.

It is an arithmetic number, because the mean of its divisors is an integer number (39636).

2⁵⁰⁵⁷⁷⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 505770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (634176).

505770 is an abundant number, since it is smaller than the sum of its proper divisors (762582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505770 is a wasteful number, since it uses less digits than its factorization.

505770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766.

The product of its (nonzero) digits is 1225, while the sum is 24.

The square root of 505770 is about 711.1750839280. The cubic root of 505770 is about 79.6741957797.

It can be divided in two parts, 505 and 770, that added together give a triangular number (1275 = T₅₀).

The spelling of 505770 in words is "five hundred five thousand, seven hundred seventy".