705890117 has 2 divisors, whose sum is σ = 705890118. Its totient is φ = 705890116.

The previous prime is 705890113. The next prime is 705890123. The reversal of 705890117 is 711098507.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 663886756 + 42003361 = 25766^2 + 6481^2 .

It is a cyclic number.

It is not a de Polignac number, because 705890117 - 2² = 705890113 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (705890113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352945058 + 352945059.

It is an arithmetic number, because the mean of its divisors is an integer number (352945059).

Almost surely, 2^705890117 is an apocalyptic number.

It is an amenable number.

705890117 is a deficient number, since it is larger than the sum of its proper divisors (1).

705890117 is an equidigital number, since it uses as much as digits as its factorization.

705890117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 38.

The square root of 705890117 is about 26568.5926800800. The cubic root of 705890117 is about 890.3874578596.

The spelling of 705890117 in words is "seven hundred five million, eight hundred ninety thousand, one hundred seventeen".