705217 has 4 divisors (see below), whose sum is σ = 710100. Its totient is φ = 700336.

The previous prime is 705209. The next prime is 705247. The reversal of 705217 is 712507.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 103041 + 602176 = 321^2 + 776^2 .

It is a cyclic number.

It is not a de Polignac number, because 705217 - 2³ = 705209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (705247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2218 + ... + 2515.

It is an arithmetic number, because the mean of its divisors is an integer number (177525).

2⁷⁰⁵²¹⁷ is an apocalyptic number.

It is an amenable number.

705217 is a deficient number, since it is larger than the sum of its proper divisors (4883).

705217 is a wasteful number, since it uses less digits than its factorization.

705217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4882.

The product of its (nonzero) digits is 490, while the sum is 22.

The square root of 705217 is about 839.7719928647. The cubic root of 705217 is about 89.0104351691.

The spelling of 705217 in words is "seven hundred five thousand, two hundred seventeen".