685997799586 has 8 divisors (see below), whose sum is σ = 1122541853904. Its totient is φ = 311817181620.

The previous prime is 685997799583. The next prime is 685997799677.

685997799586 is nontrivially palindromic in base 10.

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

It is a junction number, because it is equal to n+sod(n) for n = 685997799497 and 685997799506.

It is not an unprimeable number, because it can be changed into a prime (685997799581) 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, 15590859060 + ... + 15590859103.

It is an arithmetic number, because the mean of its divisors is an integer number (140317731738).

Almost surely, 2^685997799586 is an apocalyptic number.

685997799586 is a deficient number, since it is larger than the sum of its proper divisors (436544054318).

685997799586 is a wasteful number, since it uses less digits than its factorization.

685997799586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31181718176.

The product of its digits is 18517766400, while the sum is 88.

The spelling of 685997799586 in words is "six hundred eighty-five billion, nine hundred ninety-seven million, seven hundred ninety-nine thousand, five hundred eighty-six".