3411721 has 2 divisors, whose sum is σ = 3411722. Its totient is φ = 3411720.

The previous prime is 3411719. The next prime is 3411739. The reversal of 3411721 is 1271143.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2433600 + 978121 = 1560^2 + 989^2 .

It is a cyclic number.

It is not a de Polignac number, because 3411721 - 2¹ = 3411719 is a prime.

Together with 3411719, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3411701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1705860 + 1705861.

It is an arithmetic number, because the mean of its divisors is an integer number (1705861).

Almost surely, 2^3411721 is an apocalyptic number.

It is an amenable number.

3411721 is a deficient number, since it is larger than the sum of its proper divisors (1).

3411721 is an equidigital number, since it uses as much as digits as its factorization.

3411721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 168, while the sum is 19.

The square root of 3411721 is about 1847.0844593575. The cubic root of 3411721 is about 150.5420536410.

Adding to 3411721 its reverse (1271143), we get a palindrome (4682864).

The spelling of 3411721 in words is "three million, four hundred eleven thousand, seven hundred twenty-one".