686162 has 4 divisors (see below), whose sum is σ = 1029246. Its totient is φ = 343080.

The previous prime is 686149. The next prime is 686173. The reversal of 686162 is 261686.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 261686 = 2 ⋅130843.

It can be written as a sum of positive squares in only one way, i.e., 395641 + 290521 = 629^2 + 539^2 .

It is a nialpdrome in base 7.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 686162.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171539 + ... + 171542.

2⁶⁸⁶¹⁶² is an apocalyptic number.

686162 is a deficient number, since it is larger than the sum of its proper divisors (343084).

686162 is a wasteful number, since it uses less digits than its factorization.

686162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343083.

The product of its digits is 3456, while the sum is 29.

The square root of 686162 is about 828.3489602818. The cubic root of 686162 is about 88.2014153683.

It can be divided in two parts, 686 and 162, that added together give a palindrome (848).

The spelling of 686162 in words is "six hundred eighty-six thousand, one hundred sixty-two".