685032041 has 2 divisors, whose sum is σ = 685032042. Its totient is φ = 685032040.

The previous prime is 685031999. The next prime is 685032109. The reversal of 685032041 is 140230586.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 663835225 + 21196816 = 25765^2 + 4604^2 .

It is a cyclic number.

It is not a de Polignac number, because 685032041 - 2¹⁴ = 685015657 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 685031995 and 685032013.

It is not a weakly prime, because it can be changed into another prime (685032641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342516020 + 342516021.

It is an arithmetic number, because the mean of its divisors is an integer number (342516021).

Almost surely, 2^685032041 is an apocalyptic number.

It is an amenable number.

685032041 is a deficient number, since it is larger than the sum of its proper divisors (1).

685032041 is an equidigital number, since it uses as much as digits as its factorization.

685032041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 685032041 is about 26173.1167612877. The cubic root of 685032041 is about 881.5297260920.

The spelling of 685032041 in words is "six hundred eighty-five million, thirty-two thousand, forty-one".