686186036 has 12 divisors (see below), whose sum is σ = 1201090212. Its totient is φ = 343017408.

The previous prime is 686185999. The next prime is 686186047. The reversal of 686186036 is 630681686.

686186036 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 265690000 + 420496036 = 16300^2 + 20506^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4826 + ... + 37358.

It is an arithmetic number, because the mean of its divisors is an integer number (100090851).

Almost surely, 2^686186036 is an apocalyptic number.

It is an amenable number.

686186036 is a deficient number, since it is larger than the sum of its proper divisors (514904176).

686186036 is a wasteful number, since it uses less digits than its factorization.

686186036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37810 (or 37808 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 686186036 is about 26195.1529104146. The cubic root of 686186036 is about 882.0244524392.

The spelling of 686186036 in words is "six hundred eighty-six million, one hundred eighty-six thousand, thirty-six".