505470 has 64 divisors (see below), whose sum is σ = 1451520. Its totient is φ = 110208.

The previous prime is 505469. The next prime is 505481. The reversal of 505470 is 74505.

It is a Harshad number since it is a multiple of its sum of digits (21).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6049 + ... + 6131.

It is an arithmetic number, because the mean of its divisors is an integer number (22680).

2⁵⁰⁵⁴⁷⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 505470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (725760).

505470 is an abundant number, since it is smaller than the sum of its proper divisors (946050).

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

505470 is a wasteful number, since it uses less digits than its factorization.

505470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129.

The product of its (nonzero) digits is 700, while the sum is 21.

The square root of 505470 is about 710.9641341165. The cubic root of 505470 is about 79.6584396150.

Adding to 505470 its reverse (74505), we get a palindrome (579975).

The spelling of 505470 in words is "five hundred five thousand, four hundred seventy".