687343647603 has 8 divisors (see below), whose sum is σ = 917432120016. Its totient is φ = 457742136800.

The previous prime is 687343647587. The next prime is 687343647623. The reversal of 687343647603 is 306746343786.

It is a happy number.

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 687343647603 - 2⁴ = 687343647587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (687343647623) 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, 121737108 + ... + 121742753.

It is an arithmetic number, because the mean of its divisors is an integer number (114679015002).

Almost surely, 2^687343647603 is an apocalyptic number.

687343647603 is a deficient number, since it is larger than the sum of its proper divisors (230088472413).

687343647603 is a wasteful number, since it uses less digits than its factorization.

687343647603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243480805.

The product of its (nonzero) digits is 36578304, while the sum is 57.

The spelling of 687343647603 in words is "six hundred eighty-seven billion, three hundred forty-three million, six hundred forty-seven thousand, six hundred three".