706309 has 2 divisors, whose sum is σ = 706310. Its totient is φ = 706308.

The previous prime is 706301. The next prime is 706313. The reversal of 706309 is 903607.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 675684 + 30625 = 822^2 + 175^2 .

It is an emirp because it is prime and its reverse (903607) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 706309 - 2³ = 706301 is a prime.

706309 is a lucky number.

It is a plaindrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (706301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 353154 + 353155.

It is an arithmetic number, because the mean of its divisors is an integer number (353155).

2⁷⁰⁶³⁰⁹ is an apocalyptic number.

It is an amenable number.

706309 is a deficient number, since it is larger than the sum of its proper divisors (1).

706309 is an equidigital number, since it uses as much as digits as its factorization.

706309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 706309 is about 840.4219178484. The cubic root of 706309 is about 89.0563544954.

The spelling of 706309 in words is "seven hundred six thousand, three hundred nine".