3663505 has 8 divisors (see below), whose sum is σ = 4456872. Its totient is φ = 2890368.

The previous prime is 3663503. The next prime is 3663533. The reversal of 3663505 is 5053663.

It can be written as a sum of positive squares in 4 ways, for example, as 263169 + 3400336 = 513^2 + 1844^2 .

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 3663505 - 2¹ = 3663503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3663503) by changing a digit.

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, 4654 + ... + 5383.

It is an arithmetic number, because the mean of its divisors is an integer number (557109).

Almost surely, 2^3663505 is an apocalyptic number.

It is an amenable number.

3663505 is a deficient number, since it is larger than the sum of its proper divisors (793367).

3663505 is a wasteful number, since it uses less digits than its factorization.

3663505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10115.

The product of its (nonzero) digits is 8100, while the sum is 28.

The square root of 3663505 is about 1914.0284741874. The cubic root of 3663505 is about 154.1578327866.

The spelling of 3663505 in words is "three million, six hundred sixty-three thousand, five hundred five".