688091102 has 16 divisors (see below), whose sum is σ = 1055369952. Its totient is φ = 336369120.

The previous prime is 688091101. The next prime is 688091111. The reversal of 688091102 is 201190886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688091101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3488 + ... + 37260.

It is an arithmetic number, because the mean of its divisors is an integer number (65960622).

Almost surely, 2^688091102 is an apocalyptic number.

688091102 is a deficient number, since it is larger than the sum of its proper divisors (367278850).

688091102 is a wasteful number, since it uses less digits than its factorization.

688091102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34003.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 688091102 is about 26231.4906553173. The cubic root of 688091102 is about 882.8399563384.

The spelling of 688091102 in words is "six hundred eighty-eight million, ninety-one thousand, one hundred two".