705221347 has 8 divisors (see below), whose sum is σ = 744284160. Its totient is φ = 666353160.

The previous prime is 705221329. The next prime is 705221351. The reversal of 705221347 is 743122507.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 705221347 - 2⁷ = 705221219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (705221317) 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 in 7 ways as a sum of consecutive naturals, for example, 41179 + ... + 55732.

It is an arithmetic number, because the mean of its divisors is an integer number (93035520).

Almost surely, 2^705221347 is an apocalyptic number.

705221347 is a deficient number, since it is larger than the sum of its proper divisors (39062813).

705221347 is a wasteful number, since it uses less digits than its factorization.

705221347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97313.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 705221347 is about 26556.0039727366. The cubic root of 705221347 is about 890.1061805733.

The spelling of 705221347 in words is "seven hundred five million, two hundred twenty-one thousand, three hundred forty-seven".