686750875 has 8 divisors (see below), whose sum is σ = 857065248. Its totient is φ = 549400600.

The previous prime is 686750873. The next prime is 686750879. The reversal of 686750875 is 578057686.

It is not a de Polignac number, because 686750875 - 2¹ = 686750873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (686750873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2746879 + ... + 2747128.

It is an arithmetic number, because the mean of its divisors is an integer number (107133156).

Almost surely, 2^686750875 is an apocalyptic number.

686750875 is a deficient number, since it is larger than the sum of its proper divisors (170314373).

686750875 is an equidigital number, since it uses as much as digits as its factorization.

686750875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5494022 (or 5494012 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 52.

The square root of 686750875 is about 26205.9320574560. The cubic root of 686750875 is about 882.2664010005.

The spelling of 686750875 in words is "six hundred eighty-six million, seven hundred fifty thousand, eight hundred seventy-five".