1706674661 has 2 divisors, whose sum is σ = 1706674662. Its totient is φ = 1706674660.

The previous prime is 1706674649. The next prime is 1706674663. The reversal of 1706674661 is 1664766071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1353798436 + 352876225 = 36794^2 + 18785^2 .

It is an emirp because it is prime and its reverse (1664766071) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1706674661 - 2¹⁰ = 1706673637 is a prime.

It is a Sophie Germain prime.

Together with 1706674663, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1706674663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 853337330 + 853337331.

It is an arithmetic number, because the mean of its divisors is an integer number (853337331).

Almost surely, 2^1706674661 is an apocalyptic number.

It is an amenable number.

1706674661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1706674661 is an equidigital number, since it uses as much as digits as its factorization.

1706674661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 1706674661 is about 41311.9191154320. The cubic root of 1706674661 is about 1195.0431316750.

The spelling of 1706674661 in words is "one billion, seven hundred six million, six hundred seventy-four thousand, six hundred sixty-one".