3603665 has 8 divisors (see below), whose sum is σ = 4657128. Its totient is φ = 2661120.

The previous prime is 3603659. The next prime is 3603667. The reversal of 3603665 is 5663063.

It can be written as a sum of positive squares in 4 ways, for example, as 35344 + 3568321 = 188^2 + 1889^2 .

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

It is not a de Polignac number, because 3603665 - 2²⁰ = 2555089 is a prime.

It is a d-powerful number, because it can be written as 3² + 6⁶ + 0 + 3¹³ + 6⁷ + 6⁸ + 5⁵ .

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3603667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27656 + ... + 27785.

It is an arithmetic number, because the mean of its divisors is an integer number (582141).

Almost surely, 2^3603665 is an apocalyptic number.

It is an amenable number.

3603665 is a deficient number, since it is larger than the sum of its proper divisors (1053463).

3603665 is a wasteful number, since it uses less digits than its factorization.

3603665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55459.

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 3603665 is about 1898.3321627155. The cubic root of 3603665 is about 153.3138785441.

The spelling of 3603665 in words is "three million, six hundred three thousand, six hundred sixty-five".