686040485 has 16 divisors (see below), whose sum is σ = 891233280. Its totient is φ = 503952960.

The previous prime is 686040473. The next prime is 686040493. The reversal of 686040485 is 584040686.

It is not a de Polignac number, because 686040485 - 2⁴ = 686040469 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 15215 + ... + 40044.

It is an arithmetic number, because the mean of its divisors is an integer number (55702080).

Almost surely, 2^686040485 is an apocalyptic number.

686040485 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

686040485 is a deficient number, since it is larger than the sum of its proper divisors (205192795).

686040485 is a wasteful number, since it uses less digits than its factorization.

686040485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55468.

The product of its (nonzero) digits is 184320, while the sum is 41.

The square root of 686040485 is about 26192.3745582565. The cubic root of 686040485 is about 881.9620842122.

The spelling of 686040485 in words is "six hundred eighty-six million, forty thousand, four hundred eighty-five".