3468721 has 2 divisors, whose sum is σ = 3468722. Its totient is φ = 3468720.

The previous prime is 3468709. The next prime is 3468727. The reversal of 3468721 is 1278643.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3150625 + 318096 = 1775^2 + 564^2 .

It is a cyclic number.

It is not a de Polignac number, because 3468721 - 2⁷ = 3468593 is a prime.

It is not a weakly prime, because it can be changed into another prime (3468727) 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 as a sum of consecutive naturals, namely, 1734360 + 1734361.

It is an arithmetic number, because the mean of its divisors is an integer number (1734361).

Almost surely, 2^3468721 is an apocalyptic number.

It is an amenable number.

3468721 is a deficient number, since it is larger than the sum of its proper divisors (1).

3468721 is an equidigital number, since it uses as much as digits as its factorization.

3468721 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 3468721 is about 1862.4502677924. The cubic root of 3468721 is about 151.3758018083.

The spelling of 3468721 in words is "three million, four hundred sixty-eight thousand, seven hundred twenty-one".