688716373 has 2 divisors, whose sum is σ = 688716374. Its totient is φ = 688716372.

The previous prime is 688716349. The next prime is 688716407. The reversal of 688716373 is 373617886.

688716373 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., 472714564 + 216001809 = 21742^2 + 14697^2 .

It is a cyclic number.

It is not a de Polignac number, because 688716373 - 2¹⁷ = 688585301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (688716323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344358186 + 344358187.

It is an arithmetic number, because the mean of its divisors is an integer number (344358187).

Almost surely, 2^688716373 is an apocalyptic number.

It is an amenable number.

688716373 is a deficient number, since it is larger than the sum of its proper divisors (1).

688716373 is an equidigital number, since it uses as much as digits as its factorization.

688716373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 49.

The square root of 688716373 is about 26243.4062766250. The cubic root of 688716373 is about 883.1072887209.

The spelling of 688716373 in words is "six hundred eighty-eight million, seven hundred sixteen thousand, three hundred seventy-three".