1705997 has 2 divisors, whose sum is σ = 1705998. Its totient is φ = 1705996.

The previous prime is 1705973. The next prime is 1706009. The reversal of 1705997 is 7995071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1705636 + 361 = 1306^2 + 19^2 .

It is a cyclic number.

It is not a de Polignac number, because 1705997 - 2¹² = 1701901 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1705997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1705097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 852998 + 852999.

It is an arithmetic number, because the mean of its divisors is an integer number (852999).

2^1705997 is an apocalyptic number.

It is an amenable number.

1705997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1705997 is an equidigital number, since it uses as much as digits as its factorization.

1705997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19845, while the sum is 38.

The square root of 1705997 is about 1306.1382009573. The cubic root of 1705997 is about 119.4884940749.

The spelling of 1705997 in words is "one million, seven hundred five thousand, nine hundred ninety-seven".