685686852308 has 48 divisors (see below), whose sum is σ = 1316937242880. Its totient is φ = 311097025536.

The previous prime is 685686852283. The next prime is 685686852407. The reversal of 685686852308 is 803258686586.

It is a super-4 number, since 4×685686852308⁴ (a number of 48 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1386953 + ... + 1815216.

It is an arithmetic number, because the mean of its divisors is an integer number (27436192560).

Almost surely, 2^685686852308 is an apocalyptic number.

685686852308 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

685686852308 is a deficient number, since it is larger than the sum of its proper divisors (631250390572).

685686852308 is a wasteful number, since it uses less digits than its factorization.

685686852308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3202304 (or 3202302 counting only the distinct ones).

The product of its (nonzero) digits is 132710400, while the sum is 65.

The spelling of 685686852308 in words is "six hundred eighty-five billion, six hundred eighty-six million, eight hundred fifty-two thousand, three hundred eight".