705489319645 has 12 divisors (see below), whose sum is σ = 930546243900. Its totient is φ = 513083141120.

The previous prime is 705489319607. The next prime is 705489319693. The reversal of 705489319645 is 546913984507.

It can be written as a sum of positive squares in 2 ways, for example, as 210213997081 + 495275322564 = 458491^2 + 703758^2 .

It is not a de Polignac number, because 705489319645 - 2¹³ = 705489311453 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 583048420 + ... + 583049629.

It is an arithmetic number, because the mean of its divisors is an integer number (77545520325).

Almost surely, 2^705489319645 is an apocalyptic number.

It is an amenable number.

705489319645 is a deficient number, since it is larger than the sum of its proper divisors (225056924255).

705489319645 is a wasteful number, since it uses less digits than its factorization.

705489319645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166098076 (or 1166098065 counting only the distinct ones).

The product of its (nonzero) digits is 32659200, while the sum is 61.

The spelling of 705489319645 in words is "seven hundred five billion, four hundred eighty-nine million, three hundred nineteen thousand, six hundred forty-five".