505994 has 8 divisors (see below), whose sum is σ = 762048. Its totient is φ = 251980.

The previous prime is 505979. The next prime is 506047. The reversal of 505994 is 499505.

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

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 505994.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 569 + ... + 1155.

It is an arithmetic number, because the mean of its divisors is an integer number (95256).

2⁵⁰⁵⁹⁹⁴ is an apocalyptic number.

505994 is a deficient number, since it is larger than the sum of its proper divisors (256054).

505994 is a wasteful number, since it uses less digits than its factorization.

505994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 505994 is about 711.3325523270. The cubic root of 505994 is about 79.6859563202.

The spelling of 505994 in words is "five hundred five thousand, nine hundred ninety-four".