688273603 has 2 divisors, whose sum is σ = 688273604. Its totient is φ = 688273602.

The previous prime is 688273591. The next prime is 688273639. The reversal of 688273603 is 306372886.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 688273603 - 2⁵ = 688273571 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 688273603.

It is not a weakly prime, because it can be changed into another prime (688273303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344136801 + 344136802.

It is an arithmetic number, because the mean of its divisors is an integer number (344136802).

Almost surely, 2^688273603 is an apocalyptic number.

688273603 is a deficient number, since it is larger than the sum of its proper divisors (1).

688273603 is an equidigital number, since it uses as much as digits as its factorization.

688273603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 688273603 is about 26234.9690870792. The cubic root of 688273603 is about 882.9180007195.

The spelling of 688273603 in words is "six hundred eighty-eight million, two hundred seventy-three thousand, six hundred three".