505740 has 24 divisors (see below), whose sum is σ = 1416240. Its totient is φ = 134848.

The previous prime is 505727. The next prime is 505759. The reversal of 505740 is 47505.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4155 + ... + 4274.

It is an arithmetic number, because the mean of its divisors is an integer number (59010).

2⁵⁰⁵⁷⁴⁰ is an apocalyptic number.

It is an amenable number.

505740 is an abundant number, since it is smaller than the sum of its proper divisors (910500).

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

505740 is a wasteful number, since it uses less digits than its factorization.

505740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8441 (or 8439 counting only the distinct ones).

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

The square root of 505740 is about 711.1539917627. The cubic root of 505740 is about 79.6726204436.

The spelling of 505740 in words is "five hundred five thousand, seven hundred forty".