684313543 has 2 divisors, whose sum is σ = 684313544. Its totient is φ = 684313542.

The previous prime is 684313523. The next prime is 684313547. The reversal of 684313543 is 345313486.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 684313543 - 2⁹ = 684313031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (684313547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342156771 + 342156772.

It is an arithmetic number, because the mean of its divisors is an integer number (342156772).

Almost surely, 2^684313543 is an apocalyptic number.

684313543 is a deficient number, since it is larger than the sum of its proper divisors (1).

684313543 is an equidigital number, since it uses as much as digits as its factorization.

684313543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 37.

The square root of 684313543 is about 26159.3872825798. The cubic root of 684313543 is about 881.2214198735.

The spelling of 684313543 in words is "six hundred eighty-four million, three hundred thirteen thousand, five hundred forty-three".