686685027 has 8 divisors (see below), whose sum is σ = 1046377216. Its totient is φ = 392391432.

The previous prime is 686684989. The next prime is 686685031. The reversal of 686685027 is 720586686.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 686685027 - 2⁸ = 686684771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (686685227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16349623 + ... + 16349664.

It is an arithmetic number, because the mean of its divisors is an integer number (130797152).

Almost surely, 2^686685027 is an apocalyptic number.

686685027 is a deficient number, since it is larger than the sum of its proper divisors (359692189).

686685027 is a wasteful number, since it uses less digits than its factorization.

686685027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32699297.

The product of its (nonzero) digits is 967680, while the sum is 48.

The square root of 686685027 is about 26204.6756705745. The cubic root of 686685027 is about 882.2382018689.

The spelling of 686685027 in words is "six hundred eighty-six million, six hundred eighty-five thousand, twenty-seven".