686186342 has 16 divisors (see below), whose sum is σ = 1075757760. Its totient is φ = 327844608.

The previous prime is 686186321. The next prime is 686186359. The reversal of 686186342 is 243681686.

It is a junction number, because it is equal to n+sod(n) for n = 686186293 and 686186302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55358 + ... + 66609.

It is an arithmetic number, because the mean of its divisors is an integer number (67234860).

Almost surely, 2^686186342 is an apocalyptic number.

686186342 is a deficient number, since it is larger than the sum of its proper divisors (389571418).

686186342 is a wasteful number, since it uses less digits than its factorization.

686186342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122095.

The product of its digits is 331776, while the sum is 44.

The square root of 686186342 is about 26195.1587511891. The cubic root of 686186342 is about 882.0245835501.

The spelling of 686186342 in words is "six hundred eighty-six million, one hundred eighty-six thousand, three hundred forty-two".