685302273 has 12 divisors (see below), whose sum is σ = 1032919680. Its totient is φ = 437004216.

The previous prime is 685302257. The next prime is 685302311. The reversal of 685302273 is 372203586.

685302273 is a `hidden beast` number, since 6 + 85 + 302 + 273 = 666.

It is not a de Polignac number, because 685302273 - 2⁴ = 685302257 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (685302073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1655113 + ... + 1655526.

It is an arithmetic number, because the mean of its divisors is an integer number (86076640).

Almost surely, 2^685302273 is an apocalyptic number.

It is an amenable number.

685302273 is a deficient number, since it is larger than the sum of its proper divisors (347617407).

685302273 is a wasteful number, since it uses less digits than its factorization.

685302273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3310668 (or 3310665 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 685302273 is about 26178.2786485284. The cubic root of 685302273 is about 881.6456263757.

The spelling of 685302273 in words is "six hundred eighty-five million, three hundred two thousand, two hundred seventy-three".