613142857 has 2 divisors, whose sum is σ = 613142858. Its totient is φ = 613142856.

The previous prime is 613142833. The next prime is 613142861. The reversal of 613142857 is 758241316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 382437136 + 230705721 = 19556^2 + 15189^2 .

It is a cyclic number.

It is not a de Polignac number, because 613142857 - 2¹⁹ = 612618569 is a prime.

613142857 is a modest number, since divided by 142857 gives 613 as remainder.

It is equal to p_31974940 and since 613142857 and 31974940 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (613142807) 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, 306571428 + 306571429.

It is an arithmetic number, because the mean of its divisors is an integer number (306571429).

Almost surely, 2^613142857 is an apocalyptic number.

It is an amenable number.

613142857 is a deficient number, since it is larger than the sum of its proper divisors (1).

613142857 is an equidigital number, since it uses as much as digits as its factorization.

613142857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 37.

The square root of 613142857 is about 24761.7216081596. The cubic root of 613142857 is about 849.5466357409.

The spelling of 613142857 in words is "six hundred thirteen million, one hundred forty-two thousand, eight hundred fifty-seven".