1606817 has 2 divisors, whose sum is σ = 1606818. Its totient is φ = 1606816.

The previous prime is 1606793. The next prime is 1606837. The reversal of 1606817 is 7186061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1132096 + 474721 = 1064^2 + 689^2 .

It is a cyclic number.

It is not a de Polignac number, because 1606817 - 2⁶ = 1606753 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 1606817.

It is not a weakly prime, because it can be changed into another prime (1606837) 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, 803408 + 803409.

It is an arithmetic number, because the mean of its divisors is an integer number (803409).

2^1606817 is an apocalyptic number.

It is an amenable number.

1606817 is a deficient number, since it is larger than the sum of its proper divisors (1).

1606817 is an equidigital number, since it uses as much as digits as its factorization.

1606817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 1606817 is about 1267.6028557873. The cubic root of 1606817 is about 117.1265827509.

The spelling of 1606817 in words is "one million, six hundred six thousand, eight hundred seventeen".