686069958 has 32 divisors (see below), whose sum is σ = 1569093120. Its totient is φ = 195903360.

The previous prime is 686069957. The next prime is 686069977. The reversal of 686069958 is 859960686.

It is a junction number, because it is equal to n+sod(n) for n = 686069898 and 686069907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686069957) 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 15 ways as a sum of consecutive naturals, for example, 86983 + ... + 94541.

It is an arithmetic number, because the mean of its divisors is an integer number (49034160).

Almost surely, 2^686069958 is an apocalyptic number.

686069958 is an abundant number, since it is smaller than the sum of its proper divisors (883023162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

686069958 is a wasteful number, since it uses less digits than its factorization.

686069958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9732.

The product of its (nonzero) digits is 5598720, while the sum is 57.

The square root of 686069958 is about 26192.9371777966. The cubic root of 686069958 is about 881.9747140287.

The spelling of 686069958 in words is "six hundred eighty-six million, sixty-nine thousand, nine hundred fifty-eight".