685183445357 has 4 divisors (see below), whose sum is σ = 688968989436. Its totient is φ = 681397901280.

The previous prime is 685183445327. The next prime is 685183445393. The reversal of 685183445357 is 753544381586.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35634490441 + 649548954916 = 188771^2 + 805946^2 .

It is a cyclic number.

It is not a de Polignac number, because 685183445357 - 2⁶ = 685183445293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 685183445296 and 685183445305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685183445327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1892771768 + ... + 1892772129.

It is an arithmetic number, because the mean of its divisors is an integer number (172242247359).

Almost surely, 2^685183445357 is an apocalyptic number.

It is an amenable number.

685183445357 is a deficient number, since it is larger than the sum of its proper divisors (3785544079).

685183445357 is a wasteful number, since it uses less digits than its factorization.

685183445357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3785544078.

The product of its digits is 48384000, while the sum is 59.

The spelling of 685183445357 in words is "six hundred eighty-five billion, one hundred eighty-three million, four hundred forty-five thousand, three hundred fifty-seven".