686535417 has 12 divisors (see below), whose sum is σ = 1043855280. Its totient is φ = 433601208.

The previous prime is 686535397. The next prime is 686535469. The reversal of 686535417 is 714535686.

It is not a de Polignac number, because 686535417 - 2¹⁰ = 686534393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (686535217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2007243 + ... + 2007584.

It is an arithmetic number, because the mean of its divisors is an integer number (86987940).

Almost surely, 2^686535417 is an apocalyptic number.

It is an amenable number.

686535417 is a deficient number, since it is larger than the sum of its proper divisors (357319863).

686535417 is a wasteful number, since it uses less digits than its factorization.

686535417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4014852 (or 4014849 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 686535417 is about 26201.8208718402. The cubic root of 686535417 is about 882.1741253083.

The spelling of 686535417 in words is "six hundred eighty-six million, five hundred thirty-five thousand, four hundred seventeen".