685313553219 has 8 divisors (see below), whose sum is σ = 913781191872. Its totient is φ = 456860808360.

The previous prime is 685313553217. The next prime is 685313553259. The reversal of 685313553219 is 912355313586.

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

It is not a de Polignac number, because 685313553219 - 2¹ = 685313553217 is a prime.

It is a super-2 number, since 2×685313553219² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (685313553217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3615637 + ... + 3800454.

It is an arithmetic number, because the mean of its divisors is an integer number (114222648984).

Almost surely, 2^685313553219 is an apocalyptic number.

685313553219 is a deficient number, since it is larger than the sum of its proper divisors (228467638653).

685313553219 is a wasteful number, since it uses less digits than its factorization.

685313553219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7446897.

The product of its digits is 2916000, while the sum is 51.

The spelling of 685313553219 in words is "six hundred eighty-five billion, three hundred thirteen million, five hundred fifty-three thousand, two hundred nineteen".