705719129 has 2 divisors, whose sum is σ = 705719130. Its totient is φ = 705719128.

The previous prime is 705719117. The next prime is 705719137. The reversal of 705719129 is 921917507.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 668325904 + 37393225 = 25852^2 + 6115^2 .

It is a cyclic number.

It is not a de Polignac number, because 705719129 - 2⁸ = 705718873 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (705719159) 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, 352859564 + 352859565.

It is an arithmetic number, because the mean of its divisors is an integer number (352859565).

Almost surely, 2^705719129 is an apocalyptic number.

It is an amenable number.

705719129 is a deficient number, since it is larger than the sum of its proper divisors (1).

705719129 is an equidigital number, since it uses as much as digits as its factorization.

705719129 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 41.

The square root of 705719129 is about 26565.3746256288. The cubic root of 705719129 is about 890.3155591030.

The spelling of 705719129 in words is "seven hundred five million, seven hundred nineteen thousand, one hundred twenty-nine".