1706662889 has 2 divisors, whose sum is σ = 1706662890. Its totient is φ = 1706662888.

The previous prime is 1706662883. The next prime is 1706662907. The reversal of 1706662889 is 9882666071.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1186458025 + 520204864 = 34445^2 + 22808^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1706662889 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1706662889.

It is not a weakly prime, because it can be changed into another prime (1706662883) 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, 853331444 + 853331445.

It is an arithmetic number, because the mean of its divisors is an integer number (853331445).

Almost surely, 2^1706662889 is an apocalyptic number.

It is an amenable number.

1706662889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1706662889 is an equidigital number, since it uses as much as digits as its factorization.

1706662889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The square root of 1706662889 is about 41311.7766381452. The cubic root of 1706662889 is about 1195.0403840160.

The spelling of 1706662889 in words is "one billion, seven hundred six million, six hundred sixty-two thousand, eight hundred eighty-nine".