1706674649 has 2 divisors, whose sum is σ = 1706674650. Its totient is φ = 1706674648.

The previous prime is 1706674643. The next prime is 1706674661. The reversal of 1706674649 is 9464766071.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1612584649 + 94090000 = 40157^2 + 9700^2 .

It is a cyclic number.

It is not a de Polignac number, because 1706674649 - 2⁸ = 1706674393 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1706674597 and 1706674606.

It is not a weakly prime, because it can be changed into another prime (1706674643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 853337324 + 853337325.

It is an arithmetic number, because the mean of its divisors is an integer number (853337325).

Almost surely, 2^1706674649 is an apocalyptic number.

It is an amenable number.

1706674649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1706674649 is an equidigital number, since it uses as much as digits as its factorization.

1706674649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1524096, while the sum is 50.

The square root of 1706674649 is about 41311.9189701955. The cubic root of 1706674649 is about 1195.0431288741.

The spelling of 1706674649 in words is "one billion, seven hundred six million, six hundred seventy-four thousand, six hundred forty-nine".