3301821 has 6 divisors (see below), whose sum is σ = 4769310. Its totient is φ = 2201208.

The previous prime is 3301819. The next prime is 3301861. The reversal of 3301821 is 1281033.

It can be written as a sum of positive squares in only one way, i.e., 3132900 + 168921 = 1770^2 + 411^2 .

It is not a de Polignac number, because 3301821 - 2¹ = 3301819 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3301794 and 3301803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3301861) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 183426 + ... + 183443.

It is an arithmetic number, because the mean of its divisors is an integer number (794885).

Almost surely, 2^3301821 is an apocalyptic number.

It is an amenable number.

3301821 is a deficient number, since it is larger than the sum of its proper divisors (1467489).

3301821 is a wasteful number, since it uses less digits than its factorization.

3301821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366875 (or 366872 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 3301821 is about 1817.0913570869. The cubic root of 3301821 is about 148.9079352589.

Adding to 3301821 its reverse (1281033), we get a palindrome (4582854).

The spelling of 3301821 in words is "three million, three hundred one thousand, eight hundred twenty-one".