999683 has 2 divisors, whose sum is σ = 999684. Its totient is φ = 999682.

The previous prime is 999671. The next prime is 999721. The reversal of 999683 is 386999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999683 - 2⁴ = 999667 is a prime.

It is a super-2 number, since 2×999683² = 1998732200978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (999613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499841 + 499842.

It is an arithmetic number, because the mean of its divisors is an integer number (499842).

2⁹⁹⁹⁶⁸³ is an apocalyptic number.

999683 is a deficient number, since it is larger than the sum of its proper divisors (1).

999683 is an equidigital number, since it uses as much as digits as its factorization.

999683 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104976, while the sum is 44.

The square root of 999683 is about 999.8414874369. The cubic root of 999683 is about 99.9894322166.

The spelling of 999683 in words is "nine hundred ninety-nine thousand, six hundred eighty-three".