684345303589 has 2 divisors, whose sum is σ = 684345303590. Its totient is φ = 684345303588.

The previous prime is 684345303463. The next prime is 684345303641. The reversal of 684345303589 is 985303543486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 606926693025 + 77418610564 = 779055^2 + 278242^2 .

It is a cyclic number.

It is not a de Polignac number, because 684345303589 - 2¹³ = 684345295397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (684345303289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342172651794 + 342172651795.

It is an arithmetic number, because the mean of its divisors is an integer number (342172651795).

Almost surely, 2^684345303589 is an apocalyptic number.

It is an amenable number.

684345303589 is a deficient number, since it is larger than the sum of its proper divisors (1).

684345303589 is an equidigital number, since it uses as much as digits as its factorization.

684345303589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37324800, while the sum is 58.

The spelling of 684345303589 in words is "six hundred eighty-four billion, three hundred forty-five million, three hundred three thousand, five hundred eighty-nine".