690238304017 has 2 divisors, whose sum is σ = 690238304018. Its totient is φ = 690238304016.

The previous prime is 690238303981. The next prime is 690238304023. The reversal of 690238304017 is 710403832096.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 648925302481 + 41313001536 = 805559^2 + 203256^2 .

It is a cyclic number.

It is not a de Polignac number, because 690238304017 - 2¹⁵ = 690238271249 is a prime.

It is not a weakly prime, because it can be changed into another prime (690238304027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345119152008 + 345119152009.

It is an arithmetic number, because the mean of its divisors is an integer number (345119152009).

Almost surely, 2^690238304017 is an apocalyptic number.

It is an amenable number.

690238304017 is a deficient number, since it is larger than the sum of its proper divisors (1).

690238304017 is an equidigital number, since it uses as much as digits as its factorization.

690238304017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 690238304017 in words is "six hundred ninety billion, two hundred thirty-eight million, three hundred four thousand, seventeen".