686848 has 18 divisors (see below), whose sum is σ = 1371524. Its totient is φ = 343296.

The previous prime is 686843. The next prime is 686863. The reversal of 686848 is 848686.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 686848.

It is not an unprimeable number, because it can be changed into a prime (686843) by changing a digit.

686848 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086 + ... + 1597.

2⁶⁸⁶⁸⁴⁸ is an apocalyptic number.

It is an amenable number.

686848 is a deficient number, since it is larger than the sum of its proper divisors (684676).

686848 is an equidigital number, since it uses as much as digits as its factorization.

686848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2699 (or 2685 counting only the distinct ones).

The product of its digits is 73728, while the sum is 40.

The square root of 686848 is about 828.7629335341. The cubic root of 686848 is about 88.2307991087.

The spelling of 686848 in words is "six hundred eighty-six thousand, eight hundred forty-eight".