685356273 has 12 divisors (see below), whose sum is σ = 1131381888. Its totient is φ = 391632120.

The previous prime is 685356271. The next prime is 685356299. The reversal of 685356273 is 372653586.

685356273 is a `hidden beast` number, since 6 + 85 + 3 + 562 + 7 + 3 = 666.

It is not a de Polignac number, because 685356273 - 2¹ = 685356271 is a prime.

It is not an unprimeable number, because it can be changed into a prime (685356271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5439273 + ... + 5439398.

It is an arithmetic number, because the mean of its divisors is an integer number (94281824).

Almost surely, 2^685356273 is an apocalyptic number.

685356273 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

685356273 is a deficient number, since it is larger than the sum of its proper divisors (446025615).

685356273 is a wasteful number, since it uses less digits than its factorization.

685356273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10878684 (or 10878681 counting only the distinct ones).

The product of its digits is 907200, while the sum is 45.

The square root of 685356273 is about 26179.3100176456. The cubic root of 685356273 is about 881.6687828792.

The spelling of 685356273 in words is "six hundred eighty-five million, three hundred fifty-six thousand, two hundred seventy-three".