685224388799 has 8 divisors (see below), whose sum is σ = 694630620720. Its totient is φ = 675818686656.

The previous prime is 685224388787. The next prime is 685224388831. The reversal of 685224388799 is 997883422586.

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

It is a cyclic number.

It is not a de Polignac number, because 685224388799 - 2²⁸ = 684955953343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685224385799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2966132 + ... + 3188790.

It is an arithmetic number, because the mean of its divisors is an integer number (86828827590).

Almost surely, 2^685224388799 is an apocalyptic number.

685224388799 is a deficient number, since it is larger than the sum of its proper divisors (9406231921).

685224388799 is a wasteful number, since it uses less digits than its factorization.

685224388799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264889.

The product of its digits is 418037760, while the sum is 71.

The spelling of 685224388799 in words is "six hundred eighty-five billion, two hundred twenty-four million, three hundred eighty-eight thousand, seven hundred ninety-nine".