706309157 has 2 divisors, whose sum is σ = 706309158. Its totient is φ = 706309156.

The previous prime is 706309147. The next prime is 706309159. The reversal of 706309157 is 751903607.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 459630721 + 246678436 = 21439^2 + 15706^2 .

It is a cyclic number.

It is not a de Polignac number, because 706309157 - 2⁴ = 706309141 is a prime.

Together with 706309159, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 706309157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (706309159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 353154578 + 353154579.

It is an arithmetic number, because the mean of its divisors is an integer number (353154579).

Almost surely, 2^706309157 is an apocalyptic number.

It is an amenable number.

706309157 is a deficient number, since it is larger than the sum of its proper divisors (1).

706309157 is an equidigital number, since it uses as much as digits as its factorization.

706309157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 706309157 is about 26576.4775130189. The cubic root of 706309157 is about 890.5636109397.

The spelling of 706309157 in words is "seven hundred six million, three hundred nine thousand, one hundred fifty-seven".