686203058 has 6 divisors (see below), whose sum is σ = 1029360159. Its totient is φ = 343083006.

The previous prime is 686203057. The next prime is 686203061. The reversal of 686203058 is 850302686.

It can be written as a sum of positive squares in only one way, i.e., 343101529 + 343101529 = 18523^2 + 18523^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=18523.

It is a super-3 number, since 3×686203058³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (686203057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 27785 + ... + 46307.

Almost surely, 2^686203058 is an apocalyptic number.

686203058 is a deficient number, since it is larger than the sum of its proper divisors (343157101).

686203058 is an frugal number, since it uses more digits than its factorization.

686203058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37048 (or 18525 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 686203058 is about 26195.4778158368. The cubic root of 686203058 is about 882.0317457461.

The spelling of 686203058 in words is "six hundred eighty-six million, two hundred three thousand, fifty-eight".