705705211 has 4 divisors (see below), whose sum is σ = 706199112. Its totient is φ = 705211312.

The previous prime is 705705197. The next prime is 705705223. The reversal of 705705211 is 112507507.

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

It is a cyclic number.

It is not a de Polignac number, because 705705211 - 2²³ = 697316603 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 705705211.

It is not an unprimeable number, because it can be changed into a prime (705705271) 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, 244801 + ... + 247666.

It is an arithmetic number, because the mean of its divisors is an integer number (176549778).

Almost surely, 2^705705211 is an apocalyptic number.

705705211 is a deficient number, since it is larger than the sum of its proper divisors (493901).

705705211 is a wasteful number, since it uses less digits than its factorization.

705705211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493900.

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 705705211 is about 26565.1126668042. The cubic root of 705705211 is about 890.3097062111.

The spelling of 705705211 in words is "seven hundred five million, seven hundred five thousand, two hundred eleven".