705885647 has 4 divisors (see below), whose sum is σ = 706099896. Its totient is φ = 705671400.

The previous prime is 705885629. The next prime is 705885673. The reversal of 705885647 is 746588507.

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 705885647 - 2¹⁰ = 705884623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 705885595 and 705885604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (705885547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102104 + ... + 108797.

It is an arithmetic number, because the mean of its divisors is an integer number (176524974).

Almost surely, 2^705885647 is an apocalyptic number.

705885647 is a deficient number, since it is larger than the sum of its proper divisors (214249).

705885647 is a wasteful number, since it uses less digits than its factorization.

705885647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214248.

The product of its (nonzero) digits is 1881600, while the sum is 50.

The square root of 705885647 is about 26568.5085580655. The cubic root of 705885647 is about 890.3855784168.

The spelling of 705885647 in words is "seven hundred five million, eight hundred eighty-five thousand, six hundred forty-seven".