688006913 has 8 divisors (see below), whose sum is σ = 753833280. Its totient is φ = 622727280.

The previous prime is 688006873. The next prime is 688006927. The reversal of 688006913 is 319600886.

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 688006913 - 2²⁴ = 671229697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (688006993) 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, 134045 + ... + 139082.

It is an arithmetic number, because the mean of its divisors is an integer number (94229160).

Almost surely, 2^688006913 is an apocalyptic number.

It is an amenable number.

688006913 is a deficient number, since it is larger than the sum of its proper divisors (65826367).

688006913 is a wasteful number, since it uses less digits than its factorization.

688006913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273367.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 688006913 is about 26229.8858747041. The cubic root of 688006913 is about 882.8039492630.

The spelling of 688006913 in words is "six hundred eighty-eight million, six thousand, nine hundred thirteen".