3673821 has 8 divisors (see below), whose sum is σ = 5156320. Its totient is φ = 2320272.

The previous prime is 3673793. The next prime is 3673837. The reversal of 3673821 is 1283763.

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

It is not a de Polignac number, because 3673821 - 2¹⁹ = 3149533 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 (3673861) 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, 32170 + ... + 32283.

It is an arithmetic number, because the mean of its divisors is an integer number (644540).

Almost surely, 2^3673821 is an apocalyptic number.

It is an amenable number.

3673821 is a deficient number, since it is larger than the sum of its proper divisors (1482499).

3673821 is a wasteful number, since it uses less digits than its factorization.

3673821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64475.

The product of its digits is 6048, while the sum is 30.

The square root of 3673821 is about 1916.7214195078. The cubic root of 3673821 is about 154.3023939688.

The spelling of 3673821 in words is "three million, six hundred seventy-three thousand, eight hundred twenty-one".