684611173445 has 8 divisors (see below), whose sum is σ = 823404785280. Its totient is φ = 546441354000.

The previous prime is 684611173387. The next prime is 684611173501. The reversal of 684611173445 is 544371116486.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 684611173445 - 2³⁴ = 667431304261 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 684611173393 and 684611173402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155945681 + ... + 155950070.

It is an arithmetic number, because the mean of its divisors is an integer number (102925598160).

Almost surely, 2^684611173445 is an apocalyptic number.

It is an amenable number.

684611173445 is a deficient number, since it is larger than the sum of its proper divisors (138793611835).

684611173445 is a wasteful number, since it uses less digits than its factorization.

684611173445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311896195.

The product of its digits is 1935360, while the sum is 50.

The spelling of 684611173445 in words is "six hundred eighty-four billion, six hundred eleven million, one hundred seventy-three thousand, four hundred forty-five".