689204371 has 2 divisors, whose sum is σ = 689204372. Its totient is φ = 689204370.

The previous prime is 689204357. The next prime is 689204389. The reversal of 689204371 is 173402986.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 689204371 - 2⁵ = 689204339 is a prime.

It is not a weakly prime, because it can be changed into another prime (689204771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344602185 + 344602186.

It is an arithmetic number, because the mean of its divisors is an integer number (344602186).

Almost surely, 2^689204371 is an apocalyptic number.

689204371 is a deficient number, since it is larger than the sum of its proper divisors (1).

689204371 is an equidigital number, since it uses as much as digits as its factorization.

689204371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 689204371 is about 26252.7021656819. The cubic root of 689204371 is about 883.3158181251.

The spelling of 689204371 in words is "six hundred eighty-nine million, two hundred four thousand, three hundred seventy-one".