405683 has 2 divisors, whose sum is σ = 405684. Its totient is φ = 405682.

The previous prime is 405679. The next prime is 405689. The reversal of 405683 is 386504.

405683 is nontrivially palindromic in base 15.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 405683 - 2² = 405679 is a prime.

It is not a weakly prime, because it can be changed into another prime (405689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202841 + 202842.

It is an arithmetic number, because the mean of its divisors is an integer number (202842).

2⁴⁰⁵⁶⁸³ is an apocalyptic number.

405683 is a deficient number, since it is larger than the sum of its proper divisors (1).

405683 is an equidigital number, since it uses as much as digits as its factorization.

405683 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 405683 is about 636.9324924982. The cubic root of 405683 is about 74.0279295596.

The spelling of 405683 in words is "four hundred five thousand, six hundred eighty-three".