1363603 has 2 divisors, whose sum is σ = 1363604. Its totient is φ = 1363602.

The previous prime is 1363577. The next prime is 1363627. The reversal of 1363603 is 3063631.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1363603 - 2¹⁷ = 1232531 is a prime.

1363603 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1363673) 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, 681801 + 681802.

It is an arithmetic number, because the mean of its divisors is an integer number (681802).

2^1363603 is an apocalyptic number.

1363603 is a deficient number, since it is larger than the sum of its proper divisors (1).

1363603 is an equidigital number, since it uses as much as digits as its factorization.

1363603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 22.

The square root of 1363603 is about 1167.7341306993. The cubic root of 1363603 is about 110.8909190012.

Subtracting from 1363603 its product of nonzero digits (972), we obtain a palindrome (1362631).

The spelling of 1363603 in words is "one million, three hundred sixty-three thousand, six hundred three".