361603 has 8 divisors (see below), whose sum is σ = 400896. Its totient is φ = 323400.

The previous prime is 361577. The next prime is 361637. The reversal of 361603 is 306163.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 361603 - 2⁹ = 361091 is a prime.

It is a Duffinian number.

361603 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (361643) 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 in 7 ways as a sum of consecutive naturals, for example, 550 + ... + 1012.

It is an arithmetic number, because the mean of its divisors is an integer number (50112).

2³⁶¹⁶⁰³ is an apocalyptic number.

361603 is a deficient number, since it is larger than the sum of its proper divisors (39293).

361603 is a wasteful number, since it uses less digits than its factorization.

361603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 361603 is about 601.3343495926. The cubic root of 361603 is about 71.2432967942.

Adding to 361603 its reverse (306163), we get a palindrome (667766).

It can be divided in two parts, 36160 and 3, that added together give a palindrome (36163).

The spelling of 361603 in words is "three hundred sixty-one thousand, six hundred three".