1603397 has 2 divisors, whose sum is σ = 1603398. Its totient is φ = 1603396.

The previous prime is 1603363. The next prime is 1603403. The reversal of 1603397 is 7933061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1012036 + 591361 = 1006^2 + 769^2 .

It is an emirp because it is prime and its reverse (7933061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1603397 - 2⁶ = 1603333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1603337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 801698 + 801699.

It is an arithmetic number, because the mean of its divisors is an integer number (801699).

2^1603397 is an apocalyptic number.

It is an amenable number.

1603397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1603397 is an equidigital number, since it uses as much as digits as its factorization.

1603397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 29.

The square root of 1603397 is about 1266.2531342508. The cubic root of 1603397 is about 117.0434250864.

The spelling of 1603397 in words is "one million, six hundred three thousand, three hundred ninety-seven".