505906 has 8 divisors (see below), whose sum is σ = 761904. Its totient is φ = 251940.

The previous prime is 505877. The next prime is 505907. The reversal of 505906 is 609505.

It is a happy number.

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (505907) 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, 601 + ... + 1171.

It is an arithmetic number, because the mean of its divisors is an integer number (95238).

2⁵⁰⁵⁹⁰⁶ is an apocalyptic number.

505906 is a deficient number, since it is larger than the sum of its proper divisors (255998).

505906 is a wasteful number, since it uses less digits than its factorization.

505906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 505906 is about 711.2706938993. The cubic root of 505906 is about 79.6813365219.

The spelling of 505906 in words is "five hundred five thousand, nine hundred six".