3340800721 has 2 divisors, whose sum is σ = 3340800722. Its totient is φ = 3340800720.

The previous prime is 3340800691. The next prime is 3340800733. The reversal of 3340800721 is 1270080433.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3284550721 + 56250000 = 57311^2 + 7500^2 .

It is a cyclic number.

It is not a de Polignac number, because 3340800721 - 2¹³ = 3340792529 is a prime.

It is a super-2 number, since 2×3340800721² = 22321898914868239682, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3340800721.

It is not a weakly prime, because it can be changed into another prime (3340800791) 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, 1670400360 + 1670400361.

It is an arithmetic number, because the mean of its divisors is an integer number (1670400361).

Almost surely, 2^3340800721 is an apocalyptic number.

It is an amenable number.

3340800721 is a deficient number, since it is larger than the sum of its proper divisors (1).

3340800721 is an equidigital number, since it uses as much as digits as its factorization.

3340800721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 3340800721 is about 57799.6602152642. The cubic root of 3340800721 is about 1494.9162298002.

The spelling of 3340800721 in words is "three billion, three hundred forty million, eight hundred thousand, seven hundred twenty-one".