706139988 has 48 divisors (see below), whose sum is σ = 1687827456. Its totient is φ = 229690240.

The previous prime is 706139983. The next prime is 706139989. The reversal of 706139988 is 889931607.

706139988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 706139988.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (706139983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118570 + ... + 124382.

It is an arithmetic number, because the mean of its divisors is an integer number (35163072).

Almost surely, 2^706139988 is an apocalyptic number.

It is an amenable number.

706139988 is an abundant number, since it is smaller than the sum of its proper divisors (981687468).

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

706139988 is a wasteful number, since it uses less digits than its factorization.

706139988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6064 (or 6062 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 706139988 is about 26573.2946395437. The cubic root of 706139988 is about 890.4925052567.

It can be divided in two parts, 70613 and 9988, that added together give a triangular number (80601 = T₄₀₁).

The spelling of 706139988 in words is "seven hundred six million, one hundred thirty-nine thousand, nine hundred eighty-eight".