3639628 has 6 divisors (see below), whose sum is σ = 6369356. Its totient is φ = 1819812.

The previous prime is 3639593. The next prime is 3639631. The reversal of 3639628 is 8269363.

It is a happy number.

3639628 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 454950 + ... + 454957.

Almost surely, 2^3639628 is an apocalyptic number.

It is an amenable number.

3639628 is a deficient number, since it is larger than the sum of its proper divisors (2729728).

3639628 is a wasteful number, since it uses less digits than its factorization.

3639628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909911 (or 909909 counting only the distinct ones).

The product of its digits is 46656, while the sum is 37.

The square root of 3639628 is about 1907.7809098531. The cubic root of 3639628 is about 153.8221931659.

The spelling of 3639628 in words is "three million, six hundred thirty-nine thousand, six hundred twenty-eight".