361605 has 8 divisors (see below), whose sum is σ = 578592. Its totient is φ = 192848.

The previous prime is 361577. The next prime is 361637. The reversal of 361605 is 506163.

361605 is nontrivially palindromic in base 16.

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

It is a cyclic number.

It is not a de Polignac number, because 361605 - 2⁶ = 361541 is a prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 361605.

It is an unprimeable number.

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, 12039 + ... + 12068.

It is an arithmetic number, because the mean of its divisors is an integer number (72324).

2³⁶¹⁶⁰⁵ is an apocalyptic number.

It is an amenable number.

361605 is a deficient number, since it is larger than the sum of its proper divisors (216987).

361605 is a wasteful number, since it uses less digits than its factorization.

361605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24115.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 361605 is about 601.3360125587. The cubic root of 361605 is about 71.2434281412.

Adding to 361605 its reverse (506163), we get a palindrome (867768).

The spelling of 361605 in words is "three hundred sixty-one thousand, six hundred five".