688230801 has 6 divisors (see below), whose sum is σ = 994111170. Its totient is φ = 458820528.

The previous prime is 688230793. The next prime is 688230827. The reversal of 688230801 is 108032886.

It can be written as a sum of positive squares in only one way, i.e., 416772225 + 271458576 = 20415^2 + 16476^2 .

It is not a de Polignac number, because 688230801 - 2³ = 688230793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (688231801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38235036 + ... + 38235053.

It is an arithmetic number, because the mean of its divisors is an integer number (165685195).

Almost surely, 2^688230801 is an apocalyptic number.

It is an amenable number.

688230801 is a deficient number, since it is larger than the sum of its proper divisors (305880369).

688230801 is a wasteful number, since it uses less digits than its factorization.

688230801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76470095 (or 76470092 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 688230801 is about 26234.1533311064. The cubic root of 688230801 is about 882.8996981920.

The spelling of 688230801 in words is "six hundred eighty-eight million, two hundred thirty thousand, eight hundred one".