685832453 has 2 divisors, whose sum is σ = 685832454. Its totient is φ = 685832452.

The previous prime is 685832449. The next prime is 685832467. The reversal of 685832453 is 354238586.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 674856484 + 10975969 = 25978^2 + 3313^2 .

It is a cyclic number.

It is not a de Polignac number, because 685832453 - 2² = 685832449 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (685832753) 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, 342916226 + 342916227.

It is an arithmetic number, because the mean of its divisors is an integer number (342916227).

Almost surely, 2^685832453 is an apocalyptic number.

It is an amenable number.

685832453 is a deficient number, since it is larger than the sum of its proper divisors (1).

685832453 is an equidigital number, since it uses as much as digits as its factorization.

685832453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 691200, while the sum is 44.

The square root of 685832453 is about 26188.4030250033. The cubic root of 685832453 is about 881.8729277222.

The spelling of 685832453 in words is "six hundred eighty-five million, eight hundred thirty-two thousand, four hundred fifty-three".