675891857 has 2 divisors, whose sum is σ = 675891858. Its totient is φ = 675891856.

The previous prime is 675891817. The next prime is 675891917. The reversal of 675891857 is 758198576.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 622951681 + 52940176 = 24959^2 + 7276^2 .

It is a cyclic number.

It is not a de Polignac number, because 675891857 - 2⁶ = 675891793 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (675891817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337945928 + 337945929.

It is an arithmetic number, because the mean of its divisors is an integer number (337945929).

Almost surely, 2^675891857 is an apocalyptic number.

It is an amenable number.

675891857 is a deficient number, since it is larger than the sum of its proper divisors (1).

675891857 is an equidigital number, since it uses as much as digits as its factorization.

675891857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4233600, while the sum is 56.

The square root of 675891857 is about 25997.9202437426. The cubic root of 675891857 is about 877.5914930182.

The spelling of 675891857 in words is "six hundred seventy-five million, eight hundred ninety-one thousand, eight hundred fifty-seven".