688383956939 has 8 divisors (see below), whose sum is σ = 798466679808. Its totient is φ = 581236773480.

The previous prime is 688383956927. The next prime is 688383956947. The reversal of 688383956939 is 939659383886.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 688383956939 - 2¹² = 688383952843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 688383956939.

It is not an unprimeable number, because it can be changed into a prime (688383976939) 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 7 ways as a sum of consecutive naturals, for example, 733884347 + ... + 733885284.

It is an arithmetic number, because the mean of its divisors is an integer number (99808334976).

Almost surely, 2^688383956939 is an apocalyptic number.

688383956939 is a deficient number, since it is larger than the sum of its proper divisors (110082722869).

688383956939 is a wasteful number, since it uses less digits than its factorization.

688383956939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467769705.

The product of its digits is 1813985280, while the sum is 77.

The spelling of 688383956939 in words is "six hundred eighty-eight billion, three hundred eighty-three million, nine hundred fifty-six thousand, nine hundred thirty-nine".