3643286639 has 8 divisors (see below), whose sum is σ = 3783870720. Its totient is φ = 3505330456.

The previous prime is 3643286629. The next prime is 3643286653. The reversal of 3643286639 is 9366823463.

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 3643286639 - 2¹⁶ = 3643221103 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 (3643286629) 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, 654149 + ... + 659694.

It is an arithmetic number, because the mean of its divisors is an integer number (472983840).

Almost surely, 2^3643286639 is an apocalyptic number.

3643286639 is a deficient number, since it is larger than the sum of its proper divisors (140584081).

3643286639 is a wasteful number, since it uses less digits than its factorization.

3643286639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313949.

The product of its digits is 3359232, while the sum is 50.

The square root of 3643286639 is about 60359.6441258561. The cubic root of 3643286639 is about 1538.7371779121.

The spelling of 3643286639 in words is "three billion, six hundred forty-three million, two hundred eighty-six thousand, six hundred thirty-nine".