705604709 has 2 divisors, whose sum is σ = 705604710. Its totient is φ = 705604708.

The previous prime is 705604699. The next prime is 705604717. The reversal of 705604709 is 907406507.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 611572900 + 94031809 = 24730^2 + 9697^2 .

It is a cyclic number.

It is not a de Polignac number, because 705604709 - 2²⁸ = 437169253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (705603709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352802354 + 352802355.

It is an arithmetic number, because the mean of its divisors is an integer number (352802355).

Almost surely, 2^705604709 is an apocalyptic number.

It is an amenable number.

705604709 is a deficient number, since it is larger than the sum of its proper divisors (1).

705604709 is an equidigital number, since it uses as much as digits as its factorization.

705604709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 705604709 is about 26563.2209831564. The cubic root of 705604709 is about 890.2674401427.

The spelling of 705604709 in words is "seven hundred five million, six hundred four thousand, seven hundred nine".