688878875 has 16 divisors (see below), whose sum is σ = 860575872. Its totient is φ = 550555200.

The previous prime is 688878851. The next prime is 688878893. The reversal of 688878875 is 578878886.

It is not a de Polignac number, because 688878875 - 2¹² = 688874779 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163799 + ... + 167951.

It is an arithmetic number, because the mean of its divisors is an integer number (53785992).

Almost surely, 2^688878875 is an apocalyptic number.

688878875 is a deficient number, since it is larger than the sum of its proper divisors (171696997).

688878875 is a wasteful number, since it uses less digits than its factorization.

688878875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5495 (or 5485 counting only the distinct ones).

The product of its digits is 48168960, while the sum is 65.

The square root of 688878875 is about 26246.5021479053. The cubic root of 688878875 is about 883.1767393786.

The spelling of 688878875 in words is "six hundred eighty-eight million, eight hundred seventy-eight thousand, eight hundred seventy-five".