486561985 has 48 divisors (see below), whose sum is σ = 739753344. Its totient is φ = 300658176.

The previous prime is 486561979. The next prime is 486562039. The reversal of 486561985 is 589165684.

It is not a de Polignac number, because 486561985 - 2¹⁹ = 486037697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 253389 + ... + 255301.

It is an arithmetic number, because the mean of its divisors is an integer number (15411528).

Almost surely, 2^486561985 is an apocalyptic number.

It is an amenable number.

486561985 is a deficient number, since it is larger than the sum of its proper divisors (253191359).

486561985 is a wasteful number, since it uses less digits than its factorization.

486561985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1994 (or 1981 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 52.

The square root of 486561985 is about 22058.1500810925. The cubic root of 486561985 is about 786.5253503657.

The spelling of 486561985 in words is "four hundred eighty-six million, five hundred sixty-one thousand, nine hundred eighty-five".