3639506 has 8 divisors (see below), whose sum is σ = 5879244. Its totient is φ = 1679760.

The previous prime is 3639499. The next prime is 3639509. The reversal of 3639506 is 6059363.

3639506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2588881 + 1050625 = 1609^2 + 1025^2 .

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

It is not an unprimeable number, because it can be changed into a prime (3639509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69965 + ... + 70016.

Almost surely, 2^3639506 is an apocalyptic number.

3639506 is a deficient number, since it is larger than the sum of its proper divisors (2239738).

3639506 is a wasteful number, since it uses less digits than its factorization.

3639506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139996.

The product of its (nonzero) digits is 14580, while the sum is 32.

The square root of 3639506 is about 1907.7489352638. The cubic root of 3639506 is about 153.8204744447.

The spelling of 3639506 in words is "three million, six hundred thirty-nine thousand, five hundred six".