3638847 has 8 divisors (see below), whose sum is σ = 4860720. Its totient is φ = 2421440.

The previous prime is 3638827. The next prime is 3638851. The reversal of 3638847 is 7488363.

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 3638847 - 2¹¹ = 3636799 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3638827) 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, 2179 + ... + 3467.

It is an arithmetic number, because the mean of its divisors is an integer number (607590).

Almost surely, 2^3638847 is an apocalyptic number.

3638847 is a deficient number, since it is larger than the sum of its proper divisors (1221873).

3638847 is a wasteful number, since it uses less digits than its factorization.

3638847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2233.

The product of its digits is 96768, while the sum is 39.

The square root of 3638847 is about 1907.5762107974. The cubic root of 3638847 is about 153.8111898686.

It can be divided in two parts, 36 and 38847, that added together give a palindrome (38883).

The spelling of 3638847 in words is "three million, six hundred thirty-eight thousand, eight hundred forty-seven".