684454454473 has 2 divisors, whose sum is σ = 684454454474. Its totient is φ = 684454454472.

The previous prime is 684454454449. The next prime is 684454454503. The reversal of 684454454473 is 374454454486.

684454454473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 485456382009 + 198998072464 = 696747^2 + 446092^2 .

It is a cyclic number.

It is not a de Polignac number, because 684454454473 - 2¹³ = 684454446281 is a prime.

It is not a weakly prime, because it can be changed into another prime (684454454273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342227227236 + 342227227237.

It is an arithmetic number, because the mean of its divisors is an integer number (342227227237).

Almost surely, 2^684454454473 is an apocalyptic number.

It is an amenable number.

684454454473 is a deficient number, since it is larger than the sum of its proper divisors (1).

684454454473 is an equidigital number, since it uses as much as digits as its factorization.

684454454473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103219200, while the sum is 58.

The spelling of 684454454473 in words is "six hundred eighty-four billion, four hundred fifty-four million, four hundred fifty-four thousand, four hundred seventy-three".