508985 has 4 divisors (see below), whose sum is σ = 610788. Its totient is φ = 407184.

The previous prime is 508973. The next prime is 508987. The reversal of 508985 is 589805.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 399424 + 109561 = 632^2 + 331^2 .

It is a cyclic number.

It is not a de Polignac number, because 508985 - 2⁴ = 508969 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 508985.

It is not an unprimeable number, because it can be changed into a prime (508987) 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, 50894 + ... + 50903.

It is an arithmetic number, because the mean of its divisors is an integer number (152697).

2⁵⁰⁸⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

508985 is a deficient number, since it is larger than the sum of its proper divisors (101803).

508985 is a wasteful number, since it uses less digits than its factorization.

508985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101802.

The product of its (nonzero) digits is 14400, while the sum is 35.

The square root of 508985 is about 713.4318467801. The cubic root of 508985 is about 79.8426595025.

The spelling of 508985 in words is "five hundred eight thousand, nine hundred eighty-five".