705128690740 has 12 divisors (see below), whose sum is σ = 1480770250596. Its totient is φ = 282051476288.

The previous prime is 705128690729. The next prime is 705128690741. The reversal of 705128690740 is 47096821507.

It can be written as a sum of positive squares in 2 ways, for example, as 148406775696 + 556721915044 = 385236^2 + 746138^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (705128690741) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 17628217249 + ... + 17628217288.

It is an arithmetic number, because the mean of its divisors is an integer number (123397520883).

Almost surely, 2^705128690740 is an apocalyptic number.

It is an amenable number.

705128690740 is an abundant number, since it is smaller than the sum of its proper divisors (775641559856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

705128690740 is a wasteful number, since it uses less digits than its factorization.

705128690740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35256434546 (or 35256434544 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 705128690740 in words is "seven hundred five billion, one hundred twenty-eight million, six hundred ninety thousand, seven hundred forty".