685246329 has 6 divisors (see below), whose sum is σ = 989800266. Its totient is φ = 456830880.

The previous prime is 685246321. The next prime is 685246349. The reversal of 685246329 is 923642586.

685246329 is a `hidden beast` number, since 6 + 8 + 5 + 2 + 4 + 632 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 396925929 + 288320400 = 19923^2 + 16980^2 .

It is not a de Polignac number, because 685246329 - 2³ = 685246321 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (685246321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38069232 + ... + 38069249.

It is an arithmetic number, because the mean of its divisors is an integer number (164966711).

Almost surely, 2^685246329 is an apocalyptic number.

It is an amenable number.

685246329 is a deficient number, since it is larger than the sum of its proper divisors (304553937).

685246329 is a wasteful number, since it uses less digits than its factorization.

685246329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76138487 (or 76138484 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 685246329 is about 26177.2101072670. The cubic root of 685246329 is about 881.6216349551.

The spelling of 685246329 in words is "six hundred eighty-five million, two hundred forty-six thousand, three hundred twenty-nine".