688905608613 has 8 divisors (see below), whose sum is σ = 966885064800. Its totient is φ = 435098279088.

The previous prime is 688905608603. The next prime is 688905608647. The reversal of 688905608613 is 316806509886.

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

It is not a de Polignac number, because 688905608613 - 2⁸ = 688905608357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688905608603) 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, 6043031598 + ... + 6043031711.

It is an arithmetic number, because the mean of its divisors is an integer number (120860633100).

Almost surely, 2^688905608613 is an apocalyptic number.

It is an amenable number.

688905608613 is a deficient number, since it is larger than the sum of its proper divisors (277979456187).

688905608613 is a wasteful number, since it uses less digits than its factorization.

688905608613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12086063331.

The product of its (nonzero) digits is 14929920, while the sum is 60.

The spelling of 688905608613 in words is "six hundred eighty-eight billion, nine hundred five million, six hundred eight thousand, six hundred thirteen".