685933397452799 has 4 divisors (see below), whose sum is σ = 687517539248736. Its totient is φ = 684349255656864.

The previous prime is 685933397452783. The next prime is 685933397452817. The reversal of 685933397452799 is 997254793339586.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 685933397452799 - 2⁴ = 685933397452783 is a prime.

It is a super-2 number, since 2×685933397452799² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685933397452729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 792070897319 + ... + 792070898184.

It is an arithmetic number, because the mean of its divisors is an integer number (171879384812184).

Almost surely, 2^{685933397452799} is an apocalyptic number.

685933397452799 is a deficient number, since it is larger than the sum of its proper divisors (1584141795937).

685933397452799 is a wasteful number, since it uses less digits than its factorization.

685933397452799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584141795936.

The product of its digits is 83329948800, while the sum is 89.

The spelling of 685933397452799 in words is "six hundred eighty-five trillion, nine hundred thirty-three billion, three hundred ninety-seven million, four hundred fifty-two thousand, seven hundred ninety-nine".