685205485 has 16 divisors (see below), whose sum is σ = 871805376. Its totient is φ = 515213568.

The previous prime is 685205483. The next prime is 685205491. The reversal of 685205485 is 584502586.

It is a cyclic number.

It is not a de Polignac number, because 685205485 - 2¹ = 685205483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685205483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61774 + ... + 72016.

It is an arithmetic number, because the mean of its divisors is an integer number (54487836).

Almost surely, 2^685205485 is an apocalyptic number.

It is an amenable number.

685205485 is a deficient number, since it is larger than the sum of its proper divisors (186599891).

685205485 is a wasteful number, since it uses less digits than its factorization.

685205485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11052.

The product of its (nonzero) digits is 384000, while the sum is 43.

The square root of 685205485 is about 26176.4299513895. The cubic root of 685205485 is about 881.6041183007.

The spelling of 685205485 in words is "six hundred eighty-five million, two hundred five thousand, four hundred eighty-five".