3612005 has 8 divisors (see below), whose sum is σ = 4366872. Its totient is φ = 2867968.

The previous prime is 3611987. The next prime is 3612019. The reversal of 3612005 is 5002163.

It can be written as a sum of positive squares in 4 ways, for example, as 454276 + 3157729 = 674^2 + 1777^2 .

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 3612005 - 2⁶ = 3611941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1952 + ... + 3321.

It is an arithmetic number, because the mean of its divisors is an integer number (545859).

Almost surely, 2^3612005 is an apocalyptic number.

It is an amenable number.

3612005 is a deficient number, since it is larger than the sum of its proper divisors (754867).

3612005 is a wasteful number, since it uses less digits than its factorization.

3612005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5415.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 3612005 is about 1900.5275583374. The cubic root of 3612005 is about 153.4320593984.

Adding to 3612005 its reverse (5002163), we get a palindrome (8614168).

The spelling of 3612005 in words is "three million, six hundred twelve thousand, five".