2064337721 has 2 divisors, whose sum is σ = 2064337722. Its totient is φ = 2064337720.

The previous prime is 2064337697. The next prime is 2064337729. The reversal of 2064337721 is 1277334602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2025450025 + 38887696 = 45005^2 + 6236^2 .

It is a cyclic number.

It is not a de Polignac number, because 2064337721 - 2⁶ = 2064337657 is a prime.

It is a super-2 number, since 2×2064337721² = 8522980452686947682, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2064337729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1032168860 + 1032168861.

It is an arithmetic number, because the mean of its divisors is an integer number (1032168861).

Almost surely, 2^2064337721 is an apocalyptic number.

It is an amenable number.

2064337721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2064337721 is an equidigital number, since it uses as much as digits as its factorization.

2064337721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 35.

The square root of 2064337721 is about 45434.9834488800. The cubic root of 2064337721 is about 1273.2887915961.

The spelling of 2064337721 in words is "two billion, sixty-four million, three hundred thirty-seven thousand, seven hundred twenty-one".