705718845 has 64 divisors (see below), whose sum is σ = 1355961600. Its totient is φ = 346187520.

The previous prime is 705718837. The next prime is 705718859. The reversal of 705718845 is 548817507.

It is a happy number.

705718845 is a `hidden beast` number, since 70 + 571 + 8 + 8 + 4 + 5 = 666.

It is not a de Polignac number, because 705718845 - 2³ = 705718837 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 705718845.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 664615 + ... + 665675.

It is an arithmetic number, because the mean of its divisors is an integer number (21186900).

Almost surely, 2^705718845 is an apocalyptic number.

It is an amenable number.

705718845 is a deficient number, since it is larger than the sum of its proper divisors (650242755).

705718845 is a wasteful number, since it uses less digits than its factorization.

705718845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467 (or 1461 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 45.

The square root of 705718845 is about 26565.3692803243. The cubic root of 705718845 is about 890.3154396742.

The spelling of 705718845 in words is "seven hundred five million, seven hundred eighteen thousand, eight hundred forty-five".