686048 has 24 divisors (see below), whose sum is σ = 1474200. Its totient is φ = 311680.

The previous prime is 686041. The next prime is 686051. The reversal of 686048 is 840686.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 686048.

It is not an unprimeable number, because it can be changed into a prime (686041) by changing a digit.

686048 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 623 + ... + 1326.

It is an arithmetic number, because the mean of its divisors is an integer number (61425).

2⁶⁸⁶⁰⁴⁸ is an apocalyptic number.

It is an amenable number.

686048 is an abundant number, since it is smaller than the sum of its proper divisors (788152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

686048 is a wasteful number, since it uses less digits than its factorization.

686048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1970 (or 1962 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 686048 is about 828.2801458444. The cubic root of 686048 is about 88.1965304586.

It can be divided in two parts, 68 and 6048, that added together give a palindrome (6116).

The spelling of 686048 in words is "six hundred eighty-six thousand, forty-eight".