688574845 has 16 divisors (see below), whose sum is σ = 944795520. Its totient is φ = 471933504.

The previous prime is 688574819. The next prime is 688574849. The reversal of 688574845 is 548475886.

688574845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 688574845 - 2¹³ = 688566653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688574849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98434 + ... + 105196.

It is an arithmetic number, because the mean of its divisors is an integer number (59049720).

Almost surely, 2^688574845 is an apocalyptic number.

It is an amenable number.

688574845 is a deficient number, since it is larger than the sum of its proper divisors (256220675).

688574845 is a wasteful number, since it uses less digits than its factorization.

688574845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9684.

The product of its digits is 8601600, while the sum is 55.

The square root of 688574845 is about 26240.7096893358. The cubic root of 688574845 is about 883.0467931015.

The spelling of 688574845 in words is "six hundred eighty-eight million, five hundred seventy-four thousand, eight hundred forty-five".