687233875 has 8 divisors (see below), whose sum is σ = 857668032. Its totient is φ = 549787000.

The previous prime is 687233873. The next prime is 687233879. The reversal of 687233875 is 578332786.

It is not a de Polignac number, because 687233875 - 2¹ = 687233873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (687233873) 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, 2748811 + ... + 2749060.

It is an arithmetic number, because the mean of its divisors is an integer number (107208504).

Almost surely, 2^687233875 is an apocalyptic number.

687233875 is a deficient number, since it is larger than the sum of its proper divisors (170434157).

687233875 is an equidigital number, since it uses as much as digits as its factorization.

687233875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5497886 (or 5497876 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 49.

The square root of 687233875 is about 26215.1459084248. The cubic root of 687233875 is about 882.4731886554.

The spelling of 687233875 in words is "six hundred eighty-seven million, two hundred thirty-three thousand, eight hundred seventy-five".