685030941873 has 48 divisors (see below), whose sum is σ = 1025053363152. Its totient is φ = 440536320000.

The previous prime is 685030941851. The next prime is 685030941911. The reversal of 685030941873 is 378149030586.

685030941873 is a `hidden beast` number, since 68 + 503 + 0 + 9 + 4 + 1 + 8 + 73 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 85137319089 + 599893622784 = 291783^2 + 774528^2 .

It is not a de Polignac number, because 685030941873 - 2⁵ = 685030941841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (685030949873) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28200493 + ... + 28224773.

It is an arithmetic number, because the mean of its divisors is an integer number (21355278399).

Almost surely, 2^685030941873 is an apocalyptic number.

It is an amenable number.

685030941873 is a deficient number, since it is larger than the sum of its proper divisors (340022421279).

685030941873 is a wasteful number, since it uses less digits than its factorization.

685030941873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25186 (or 25183 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 685030941873 in words is "six hundred eighty-five billion, thirty million, nine hundred forty-one thousand, eight hundred seventy-three".