684354743 has 2 divisors, whose sum is σ = 684354744. Its totient is φ = 684354742.

The previous prime is 684354661. The next prime is 684354757. The reversal of 684354743 is 347453486.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 684354743 - 2¹² = 684350647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 684354694 and 684354703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (684354793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342177371 + 342177372.

It is an arithmetic number, because the mean of its divisors is an integer number (342177372).

Almost surely, 2^684354743 is an apocalyptic number.

684354743 is a deficient number, since it is larger than the sum of its proper divisors (1).

684354743 is an equidigital number, since it uses as much as digits as its factorization.

684354743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 44.

The square root of 684354743 is about 26160.1747509454. The cubic root of 684354743 is about 881.2391045515.

The spelling of 684354743 in words is "six hundred eighty-four million, three hundred fifty-four thousand, seven hundred forty-three".