688875163 has 2 divisors, whose sum is σ = 688875164. Its totient is φ = 688875162.

The previous prime is 688875119. The next prime is 688875169. The reversal of 688875163 is 361578886.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-688875163 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 688875163.

It is not a weakly prime, because it can be changed into another prime (688875169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344437581 + 344437582.

It is an arithmetic number, because the mean of its divisors is an integer number (344437582).

Almost surely, 2^688875163 is an apocalyptic number.

688875163 is a deficient number, since it is larger than the sum of its proper divisors (1).

688875163 is an equidigital number, since it uses as much as digits as its factorization.

688875163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1935360, while the sum is 52.

The square root of 688875163 is about 26246.4314336254. The cubic root of 688875163 is about 883.1751530533.

The spelling of 688875163 in words is "six hundred eighty-eight million, eight hundred seventy-five thousand, one hundred sixty-three".