803609 has 2 divisors, whose sum is σ = 803610. Its totient is φ = 803608.

The previous prime is 803591. The next prime is 803611. The reversal of 803609 is 906308.

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., 739600 + 64009 = 860^2 + 253^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-803609 is a prime.

Together with 803611, it forms a pair of twin primes.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 803609.

It is not a weakly prime, because it can be changed into another prime (803629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401804 + 401805.

It is an arithmetic number, because the mean of its divisors is an integer number (401805).

2⁸⁰³⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

803609 is a deficient number, since it is larger than the sum of its proper divisors (1).

803609 is an equidigital number, since it uses as much as digits as its factorization.

803609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 803609 is about 896.4424130975. The cubic root of 803609 is about 92.9711630638.

The spelling of 803609 in words is "eight hundred three thousand, six hundred nine".