3686638201 has 8 divisors (see below), whose sum is σ = 3707486208. Its totient is φ = 3665844000.

The previous prime is 3686638199. The next prime is 3686638211. The reversal of 3686638201 is 1028366863.

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 3686638201 - 2¹ = 3686638199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3686638211) 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, 128136 + ... + 154246.

It is an arithmetic number, because the mean of its divisors is an integer number (463435776).

Almost surely, 2^3686638201 is an apocalyptic number.

It is an amenable number.

3686638201 is a deficient number, since it is larger than the sum of its proper divisors (20848007).

3686638201 is a wasteful number, since it uses less digits than its factorization.

3686638201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26903.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 3686638201 is about 60717.6926521422. The cubic root of 3686638201 is about 1544.8162872995.

The spelling of 3686638201 in words is "three billion, six hundred eighty-six million, six hundred thirty-eight thousand, two hundred one".