3307221 has 6 divisors (see below), whose sum is σ = 4777110. Its totient is φ = 2204808.

The previous prime is 3307219. The next prime is 3307223. The reversal of 3307221 is 1227033.

It is an interprime number because it is at equal distance from previous prime (3307219) and next prime (3307223).

It can be written as a sum of positive squares in only one way, i.e., 3294225 + 12996 = 1815^2 + 114^2 .

It is not a de Polignac number, because 3307221 - 2¹ = 3307219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3307194 and 3307203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3307223) 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 5 ways as a sum of consecutive naturals, for example, 183726 + ... + 183743.

It is an arithmetic number, because the mean of its divisors is an integer number (796185).

Almost surely, 2^3307221 is an apocalyptic number.

It is an amenable number.

3307221 is a deficient number, since it is larger than the sum of its proper divisors (1469889).

3307221 is a wasteful number, since it uses less digits than its factorization.

3307221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367475 (or 367472 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 3307221 is about 1818.5766412225. The cubic root of 3307221 is about 148.9890687595.

The spelling of 3307221 in words is "three million, three hundred seven thousand, two hundred twenty-one".