689688683 has 2 divisors, whose sum is σ = 689688684. Its totient is φ = 689688682.

The previous prime is 689688617. The next prime is 689688707. The reversal of 689688683 is 386886986.

689688683 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 689688683 - 2⁸ = 689688427 is a prime.

It is not a weakly prime, because it can be changed into another prime (689685683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344844341 + 344844342.

It is an arithmetic number, because the mean of its divisors is an integer number (344844342).

Almost surely, 2^689688683 is an apocalyptic number.

689688683 is a deficient number, since it is larger than the sum of its proper divisors (1).

689688683 is an equidigital number, since it uses as much as digits as its factorization.

689688683 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23887872, while the sum is 62.

The square root of 689688683 is about 26261.9245867473. The cubic root of 689688683 is about 883.5226751430.

The spelling of 689688683 in words is "six hundred eighty-nine million, six hundred eighty-eight thousand, six hundred eighty-three".