688055801 has 2 divisors, whose sum is σ = 688055802. Its totient is φ = 688055800.

The previous prime is 688055789. The next prime is 688055821. The reversal of 688055801 is 108550886.

688055801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 590441401 + 97614400 = 24299^2 + 9880^2 .

It is a cyclic number.

It is not a de Polignac number, because 688055801 - 2¹⁰ = 688054777 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (688055821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344027900 + 344027901.

It is an arithmetic number, because the mean of its divisors is an integer number (344027901).

Almost surely, 2^688055801 is an apocalyptic number.

It is an amenable number.

688055801 is a deficient number, since it is larger than the sum of its proper divisors (1).

688055801 is an equidigital number, since it uses as much as digits as its factorization.

688055801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 76800, while the sum is 41.

The square root of 688055801 is about 26230.8177722312. The cubic root of 688055801 is about 882.8248586931.

The spelling of 688055801 in words is "six hundred eighty-eight million, fifty-five thousand, eight hundred one".