3476821 has 2 divisors, whose sum is σ = 3476822. Its totient is φ = 3476820.

The previous prime is 3476783. The next prime is 3476827. The reversal of 3476821 is 1286743.

3476821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2852721 + 624100 = 1689^2 + 790^2 .

It is a cyclic number.

It is not a de Polignac number, because 3476821 - 2¹¹ = 3474773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3476827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1738410 + 1738411.

It is an arithmetic number, because the mean of its divisors is an integer number (1738411).

Almost surely, 2^3476821 is an apocalyptic number.

It is an amenable number.

3476821 is a deficient number, since it is larger than the sum of its proper divisors (1).

3476821 is an equidigital number, since it uses as much as digits as its factorization.

3476821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 31.

The square root of 3476821 is about 1864.6235545010. The cubic root of 3476821 is about 151.4935388473.

The spelling of 3476821 in words is "three million, four hundred seventy-six thousand, eight hundred twenty-one".