684024317029 has 2 divisors, whose sum is σ = 684024317030. Its totient is φ = 684024317028.

The previous prime is 684024317023. The next prime is 684024317083. The reversal of 684024317029 is 920713420486.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 664554300804 + 19470016225 = 815202^2 + 139535^2 .

It is a cyclic number.

It is not a de Polignac number, because 684024317029 - 2¹³ = 684024308837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 684024317029.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (684024317023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342012158514 + 342012158515.

It is an arithmetic number, because the mean of its divisors is an integer number (342012158515).

Almost surely, 2^684024317029 is an apocalyptic number.

It is an amenable number.

684024317029 is a deficient number, since it is larger than the sum of its proper divisors (1).

684024317029 is an equidigital number, since it uses as much as digits as its factorization.

684024317029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 46.

The spelling of 684024317029 in words is "six hundred eighty-four billion, twenty-four million, three hundred seventeen thousand, twenty-nine".