543465985 has 16 divisors (see below), whose sum is σ = 658726992. Its totient is φ = 430412800.

The previous prime is 543465983. The next prime is 543465997. The reversal of 543465985 is 589564345.

It can be written as a sum of positive squares in 8 ways, for example, as 16641 + 543449344 = 129^2 + 23312^2 .

It is not a de Polignac number, because 543465985 - 2¹ = 543465983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (543465983) 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, 314925 + ... + 316645.

It is an arithmetic number, because the mean of its divisors is an integer number (41170437).

Almost surely, 2^543465985 is an apocalyptic number.

It is an amenable number.

543465985 is a deficient number, since it is larger than the sum of its proper divisors (115261007).

543465985 is a wasteful number, since it uses less digits than its factorization.

543465985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2324.

The product of its digits is 2592000, while the sum is 49.

The square root of 543465985 is about 23312.3569164510. The cubic root of 543465985 is about 816.0638171166.

The spelling of 543465985 in words is "five hundred forty-three million, four hundred sixty-five thousand, nine hundred eighty-five".