687798754973 has 8 divisors (see below), whose sum is σ = 754818886080. Its totient is φ = 621527452480.

The previous prime is 687798754933. The next prime is 687798754997. The reversal of 687798754973 is 379457897786.

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

It is not a de Polignac number, because 687798754973 - 2²⁶ = 687731646109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687798754933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187205228 + ... + 187208901.

It is an arithmetic number, because the mean of its divisors is an integer number (94352360760).

Almost surely, 2^687798754973 is an apocalyptic number.

It is an amenable number.

687798754973 is a deficient number, since it is larger than the sum of its proper divisors (67020131107).

687798754973 is a wasteful number, since it uses less digits than its factorization.

687798754973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374414307.

The product of its digits is 4480842240, while the sum is 80.

The spelling of 687798754973 in words is "six hundred eighty-seven billion, seven hundred ninety-eight million, seven hundred fifty-four thousand, nine hundred seventy-three".