3582821 has 8 divisors (see below), whose sum is σ = 4014624. Its totient is φ = 3168720.

The previous prime is 3582809. The next prime is 3582823. The reversal of 3582821 is 1282853.

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 3582821 - 2⁶ = 3582757 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 (3582823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3995 + ... + 4808.

It is an arithmetic number, because the mean of its divisors is an integer number (501828).

Almost surely, 2^3582821 is an apocalyptic number.

It is an amenable number.

3582821 is a deficient number, since it is larger than the sum of its proper divisors (431803).

3582821 is a wasteful number, since it uses less digits than its factorization.

3582821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8851.

The product of its digits is 3840, while the sum is 29.

The square root of 3582821 is about 1892.8341184584. The cubic root of 3582821 is about 153.0177119342.

Subtracting from 3582821 its reverse (1282853), we obtain a cube (2299968 = 132³).

The spelling of 3582821 in words is "three million, five hundred eighty-two thousand, eight hundred twenty-one".