682905 has 16 divisors (see below), whose sum is σ = 1114560. Its totient is φ = 356928.

The previous prime is 682901. The next prime is 682933. The reversal of 682905 is 509286.

It is not a de Polignac number, because 682905 - 2² = 682901 is a prime.

It is a Curzon number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (682901) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 366 + ... + 1224.

It is an arithmetic number, because the mean of its divisors is an integer number (69660).

2⁶⁸²⁹⁰⁵ is an apocalyptic number.

It is an amenable number.

682905 is a deficient number, since it is larger than the sum of its proper divisors (431655).

682905 is a wasteful number, since it uses less digits than its factorization.

682905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 682905 is about 826.3806628909. The cubic root of 682905 is about 88.0616389779.

The spelling of 682905 in words is "six hundred eighty-two thousand, nine hundred five".