685443342285 has 288 divisors, whose sum is σ = 1421841133440. Its totient is φ = 315536891904.

The previous prime is 685443342187. The next prime is 685443342317. The reversal of 685443342285 is 582243344586.

685443342285 is a `hidden beast` number, since 6 + 8 + 544 + 33 + 42 + 28 + 5 = 666.

It is not a de Polignac number, because 685443342285 - 2¹⁴ = 685443325901 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 624833857 + ... + 624834953.

It is an arithmetic number, because the mean of its divisors is an integer number (4936948380).

Almost surely, 2^685443342285 is an apocalyptic number.

685443342285 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

685443342285 is an abundant number, since it is smaller than the sum of its proper divisors (736397791155).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

685443342285 is a wasteful number, since it uses less digits than its factorization.

685443342285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339 (or 1314 counting only the distinct ones).

The product of its digits is 22118400, while the sum is 54.

The spelling of 685443342285 in words is "six hundred eighty-five billion, four hundred forty-three million, three hundred forty-two thousand, two hundred eighty-five".