685773134 has 32 divisors (see below), whose sum is σ = 1092268800. Its totient is φ = 322387200.

The previous prime is 685773131. The next prime is 685773199. The reversal of 685773134 is 431377586.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685773131) 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 15 ways as a sum of consecutive naturals, for example, 886772 + ... + 887544.

It is an arithmetic number, because the mean of its divisors is an integer number (34133400).

Almost surely, 2^685773134 is an apocalyptic number.

685773134 is a deficient number, since it is larger than the sum of its proper divisors (406495666).

685773134 is a wasteful number, since it uses less digits than its factorization.

685773134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196.

The product of its digits is 423360, while the sum is 44.

The square root of 685773134 is about 26187.2704572279. The cubic root of 685773134 is about 881.8475020135.

The spelling of 685773134 in words is "six hundred eighty-five million, seven hundred seventy-three thousand, one hundred thirty-four".