686927545 has 16 divisors (see below), whose sum is σ = 860954112. Its totient is φ = 525159360.

The previous prime is 686927531. The next prime is 686927557. The reversal of 686927545 is 545729686.

It is not a de Polignac number, because 686927545 - 2¹⁹ = 686403257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 686927492 and 686927501.

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 15 ways as a sum of consecutive naturals, for example, 165040 + ... + 169150.

It is an arithmetic number, because the mean of its divisors is an integer number (53809632).

Almost surely, 2^686927545 is an apocalyptic number.

It is an amenable number.

686927545 is a deficient number, since it is larger than the sum of its proper divisors (174026567).

686927545 is a wasteful number, since it uses less digits than its factorization.

686927545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5592.

The product of its digits is 3628800, while the sum is 52.

The square root of 686927545 is about 26209.3026423825. The cubic root of 686927545 is about 882.3420502869.

The spelling of 686927545 in words is "six hundred eighty-six million, nine hundred twenty-seven thousand, five hundred forty-five".