685369133 has 8 divisors (see below), whose sum is σ = 698634720. Its totient is φ = 672230800.

The previous prime is 685369123. The next prime is 685369141. The reversal of 685369133 is 331963586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 685369133 - 2¹⁰ = 685368109 is a prime.

It is a Duffinian 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 (685369103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20903 + ... + 42516.

It is an arithmetic number, because the mean of its divisors is an integer number (87329340).

Almost surely, 2^685369133 is an apocalyptic number.

It is an amenable number.

685369133 is a deficient number, since it is larger than the sum of its proper divisors (13265587).

685369133 is a wasteful number, since it uses less digits than its factorization.

685369133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63627.

The product of its digits is 349920, while the sum is 44.

The square root of 685369133 is about 26179.5556303005. Note that the first 3 decimals coincide. The cubic root of 685369133 is about 881.6742973783.

The spelling of 685369133 in words is "six hundred eighty-five million, three hundred sixty-nine thousand, one hundred thirty-three".