1608769 has 2 divisors, whose sum is σ = 1608770. Its totient is φ = 1608768.

The previous prime is 1608751. The next prime is 1608773. The reversal of 1608769 is 9678061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1345600 + 263169 = 1160^2 + 513^2 .

It is an emirp because it is prime and its reverse (9678061) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1608769 is a prime.

It is a super-2 number, since 2×1608769² = 5176275390722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1608569) 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, 804384 + 804385.

It is an arithmetic number, because the mean of its divisors is an integer number (804385).

2^1608769 is an apocalyptic number.

It is an amenable number.

1608769 is a deficient number, since it is larger than the sum of its proper divisors (1).

1608769 is an equidigital number, since it uses as much as digits as its factorization.

1608769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 1608769 is about 1268.3725793315. The cubic root of 1608769 is about 117.1739929558.

The spelling of 1608769 in words is "one million, six hundred eight thousand, seven hundred sixty-nine".