3667639 has 8 divisors (see below), whose sum is σ = 3742848. Its totient is φ = 3593400.

The previous prime is 3667637. The next prime is 3667669. The reversal of 3667639 is 9367663.

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 3667639 - 2¹ = 3667637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3667637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16044 + ... + 16270.

It is an arithmetic number, because the mean of its divisors is an integer number (467856).

Almost surely, 2^3667639 is an apocalyptic number.

3667639 is a deficient number, since it is larger than the sum of its proper divisors (75209).

3667639 is a wasteful number, since it uses less digits than its factorization.

3667639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485.

The product of its digits is 122472, while the sum is 40.

The square root of 3667639 is about 1915.1080909442. The cubic root of 3667639 is about 154.2157963051.

The spelling of 3667639 in words is "three million, six hundred sixty-seven thousand, six hundred thirty-nine".