3678621 has 8 divisors (see below), whose sum is σ = 5074080. Its totient is φ = 2367792.

The previous prime is 3678617. The next prime is 3678659. The reversal of 3678621 is 1268763.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3678621 - 2² = 3678617 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3678601) 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, 21055 + ... + 21228.

It is an arithmetic number, because the mean of its divisors is an integer number (634260).

Almost surely, 2^3678621 is an apocalyptic number.

It is an amenable number.

3678621 is a deficient number, since it is larger than the sum of its proper divisors (1395459).

3678621 is a wasteful number, since it uses less digits than its factorization.

3678621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42315.

The product of its digits is 12096, while the sum is 33.

The square root of 3678621 is about 1917.9731489257. The cubic root of 3678621 is about 154.3695655558.

The spelling of 3678621 in words is "three million, six hundred seventy-eight thousand, six hundred twenty-one".