3638001 has 8 divisors (see below), whose sum is σ = 4888224. Its totient is φ = 2406560.

The previous prime is 3637981. The next prime is 3638003. The reversal of 3638001 is 1008363.

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 3638001 - 2⁶ = 3637937 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3638003) 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, 4236 + ... + 5021.

It is an arithmetic number, because the mean of its divisors is an integer number (611028).

Almost surely, 2^3638001 is an apocalyptic number.

It is an amenable number.

3638001 is a deficient number, since it is larger than the sum of its proper divisors (1250223).

3638001 is a wasteful number, since it uses less digits than its factorization.

3638001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9391.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 3638001 is about 1907.3544505414. The cubic root of 3638001 is about 153.7992690273.

The spelling of 3638001 in words is "three million, six hundred thirty-eight thousand, one".