699943 has 2 divisors, whose sum is σ = 699944. Its totient is φ = 699942.

The previous prime is 699931. The next prime is 699947. The reversal of 699943 is 349996.

699943 is nontrivially palindromic in base 15.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-699943 is a prime.

699943 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 699896 and 699905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (699947) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349971 + 349972.

It is an arithmetic number, because the mean of its divisors is an integer number (349972).

2⁶⁹⁹⁹⁴³ is an apocalyptic number.

699943 is a deficient number, since it is larger than the sum of its proper divisors (1).

699943 is an equidigital number, since it uses as much as digits as its factorization.

699943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52488, while the sum is 40.

The square root of 699943 is about 836.6259618252. The cubic root of 699943 is about 88.7879900837.

The spelling of 699943 in words is "six hundred ninety-nine thousand, nine hundred forty-three".