3221845 has 8 divisors (see below), whose sum is σ = 4217760. Its totient is φ = 2343120.

The previous prime is 3221819. The next prime is 3221899. The reversal of 3221845 is 5481223.

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

It is not a de Polignac number, because 3221845 - 2⁷ = 3221717 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29235 + ... + 29344.

It is an arithmetic number, because the mean of its divisors is an integer number (527220).

Almost surely, 2^3221845 is an apocalyptic number.

It is an amenable number.

3221845 is a deficient number, since it is larger than the sum of its proper divisors (995915).

3221845 is a wasteful number, since it uses less digits than its factorization.

3221845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58595.

The product of its digits is 1920, while the sum is 25.

The square root of 3221845 is about 1794.9498600240. The cubic root of 3221845 is about 147.6958234075.

The spelling of 3221845 in words is "three million, two hundred twenty-one thousand, eight hundred forty-five".