705640703128 has 32 divisors (see below), whose sum is σ = 1337015685600. Its totient is φ = 349104817152.

The previous prime is 705640703123. The next prime is 705640703147. The reversal of 705640703128 is 821307046507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (705640703123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3444438 + ... + 3643546.

It is an arithmetic number, because the mean of its divisors is an integer number (41781740175).

Almost surely, 2^705640703128 is an apocalyptic number.

It is an amenable number.

705640703128 is a deficient number, since it is larger than the sum of its proper divisors (631374982472).

705640703128 is a wasteful number, since it uses less digits than its factorization.

705640703128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203779 (or 203775 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 43.

The spelling of 705640703128 in words is "seven hundred five billion, six hundred forty million, seven hundred three thousand, one hundred twenty-eight".