706664189205 has 24 divisors (see below), whose sum is σ = 1319106487608. Its totient is φ = 347896215936.

The previous prime is 706664189177. The next prime is 706664189221. The reversal of 706664189205 is 502981466607.

It can be written as a sum of positive squares in 4 ways, for example, as 1885470084 + 704778719121 = 43422^2 + 839511^2 .

It is not a de Polignac number, because 706664189205 - 2⁹ = 706664188693 is a prime.

It is a super-3 number, since 3×706664189205³ (a number of 37 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 603985902 + ... + 603987071.

It is an arithmetic number, because the mean of its divisors is an integer number (54962770317).

Almost surely, 2^706664189205 is an apocalyptic number.

It is an amenable number.

706664189205 is a deficient number, since it is larger than the sum of its proper divisors (612442298403).

706664189205 is a wasteful number, since it uses less digits than its factorization.

706664189205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207972997 (or 1207972994 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 706664189205 in words is "seven hundred six billion, six hundred sixty-four million, one hundred eighty-nine thousand, two hundred five".