1706213 has 2 divisors, whose sum is σ = 1706214. Its totient is φ = 1706212.

The previous prime is 1706191. The next prime is 1706227. The reversal of 1706213 is 3126071.

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., 1592644 + 113569 = 1262^2 + 337^2 .

It is a cyclic number.

It is not a de Polignac number, because 1706213 - 2¹⁰ = 1705189 is a prime.

It is a super-2 number, since 2×1706213² = 5822325602738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1706233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 853106 + 853107.

It is an arithmetic number, because the mean of its divisors is an integer number (853107).

2^1706213 is an apocalyptic number.

It is an amenable number.

1706213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1706213 is an equidigital number, since it uses as much as digits as its factorization.

1706213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 1706213 is about 1306.2208848430. The cubic root of 1706213 is about 119.4935367617.

It can be divided in two parts, 1706 and 213, that multiplied together give a triangular number (363378 = T₈₅₂).

The spelling of 1706213 in words is "one million, seven hundred six thousand, two hundred thirteen".