686035 has 16 divisors (see below), whose sum is σ = 997056. Its totient is φ = 442368.

The previous prime is 686029. The next prime is 686039. The reversal of 686035 is 530686.

It is a 14-Lehmer number, since φ(686035) divides (686035-1)¹⁴.

It is a cyclic number.

It is not a de Polignac number, because 686035 - 2³ = 686027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 685994 and 686012.

It is not an unprimeable number, because it can be changed into a prime (686039) 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, 19 + ... + 1171.

It is an arithmetic number, because the mean of its divisors is an integer number (62316).

2⁶⁸⁶⁰³⁵ is an apocalyptic number.

686035 is a deficient number, since it is larger than the sum of its proper divisors (311021).

686035 is a wasteful number, since it uses less digits than its factorization.

686035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 686035 is about 828.2722982208. The cubic root of 686035 is about 88.1959733731.

It can be divided in two parts, 6860 and 35, that multiplied together give a square (240100 = 490²).

The spelling of 686035 in words is "six hundred eighty-six thousand, thirty-five".