481709985 has 16 divisors (see below), whose sum is σ = 783372480. Its totient is φ = 252699840.

The previous prime is 481709971. The next prime is 481709989. The reversal of 481709985 is 589907184.

It is not a de Polignac number, because 481709985 - 2²⁵ = 448155553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (481709989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262315 + ... + 264144.

It is an arithmetic number, because the mean of its divisors is an integer number (48960780).

Almost surely, 2^481709985 is an apocalyptic number.

It is an amenable number.

481709985 is a deficient number, since it is larger than the sum of its proper divisors (301662495).

481709985 is a wasteful number, since it uses less digits than its factorization.

481709985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526528.

The product of its (nonzero) digits is 725760, while the sum is 51.

The square root of 481709985 is about 21947.8924956361. The cubic root of 481709985 is about 783.9021992269.

It can be divided in two parts, 4817099 and 85, that added together give a palindrome (4817184).

The spelling of 481709985 in words is "four hundred eighty-one million, seven hundred nine thousand, nine hundred eighty-five".