1689713017 has 2 divisors, whose sum is σ = 1689713018. Its totient is φ = 1689713016.

The previous prime is 1689712991. The next prime is 1689713021. The reversal of 1689713017 is 7103179861.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1684609936 + 5103081 = 41044^2 + 2259^2 .

It is a cyclic number.

It is not a de Polignac number, because 1689713017 - 2¹¹ = 1689710969 is a prime.

It is not a weakly prime, because it can be changed into another prime (1689713057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 844856508 + 844856509.

It is an arithmetic number, because the mean of its divisors is an integer number (844856509).

Almost surely, 2^1689713017 is an apocalyptic number.

It is an amenable number.

1689713017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1689713017 is an equidigital number, since it uses as much as digits as its factorization.

1689713017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 1689713017 is about 41106.1189727272. The cubic root of 1689713017 is about 1191.0709980111.

The spelling of 1689713017 in words is "one billion, six hundred eighty-nine million, seven hundred thirteen thousand, seventeen".