688342105 has 8 divisors (see below), whose sum is σ = 901102464. Its totient is φ = 500612400.

The previous prime is 688342093. The next prime is 688342133. The reversal of 688342105 is 501243886.

It is a happy number.

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

It is not a de Polignac number, because 688342105 - 2⁷ = 688341977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6257601 + ... + 6257710.

It is an arithmetic number, because the mean of its divisors is an integer number (112637808).

Almost surely, 2^688342105 is an apocalyptic number.

It is an amenable number.

688342105 is a deficient number, since it is larger than the sum of its proper divisors (212760359).

688342105 is a wasteful number, since it uses less digits than its factorization.

688342105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12515327.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 688342105 is about 26236.2746021610. The cubic root of 688342105 is about 882.9472912237.

The spelling of 688342105 in words is "six hundred eighty-eight million, three hundred forty-two thousand, one hundred five".