688703380770 has 128 divisors (see below), whose sum is σ = 1680030503424. Its totient is φ = 180666630144.

The previous prime is 688703380769. The next prime is 688703380817. The reversal of 688703380770 is 77083307886.

It is a super-3 number, since 3×688703380770³ (a number of 36 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 688703380770.

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 63 ways as a sum of consecutive naturals, for example, 325935234 + ... + 325937346.

It is an arithmetic number, because the mean of its divisors is an integer number (13125238308).

Almost surely, 2^688703380770 is an apocalyptic number.

688703380770 is an abundant number, since it is smaller than the sum of its proper divisors (991327122654).

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

688703380770 is a wasteful number, since it uses less digits than its factorization.

688703380770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2876.

The product of its (nonzero) digits is 9483264, while the sum is 57.

The spelling of 688703380770 in words is "six hundred eighty-eight billion, seven hundred three million, three hundred eighty thousand, seven hundred seventy".