508613985 has 40 divisors (see below), whose sum is σ = 994631616. Its totient is φ = 246598560.

The previous prime is 508613981. The next prime is 508614011. The reversal of 508613985 is 589316805.

508613985 is a `hidden beast` number, since 508 + 6 + 139 + 8 + 5 = 666.

It is not a de Polignac number, because 508613985 - 2² = 508613981 is a prime.

It is a super-3 number, since 3×508613985³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 508613985.

It is not an unprimeable number, because it can be changed into a prime (508613981) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 52629 + ... + 61538.

Almost surely, 2^508613985 is an apocalyptic number.

508613985 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

508613985 is a deficient number, since it is larger than the sum of its proper divisors (486017631).

508613985 is a wasteful number, since it uses less digits than its factorization.

508613985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114195 (or 114186 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 508613985 is about 22552.4718157456. The cubic root of 508613985 is about 798.2325485407.

The spelling of 508613985 in words is "five hundred eight million, six hundred thirteen thousand, nine hundred eighty-five".