613256543 has 2 divisors, whose sum is σ = 613256544. Its totient is φ = 613256542.

The previous prime is 613256491. The next prime is 613256549. The reversal of 613256543 is 345652316.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 613256543 - 2¹⁰ = 613255519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (613256549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306628271 + 306628272.

It is an arithmetic number, because the mean of its divisors is an integer number (306628272).

Almost surely, 2^613256543 is an apocalyptic number.

613256543 is a deficient number, since it is larger than the sum of its proper divisors (1).

613256543 is an equidigital number, since it uses as much as digits as its factorization.

613256543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 35.

The square root of 613256543 is about 24764.0171014317. The cubic root of 613256543 is about 849.5991387800.

The spelling of 613256543 in words is "six hundred thirteen million, two hundred fifty-six thousand, five hundred forty-three".