3320815261 has 2 divisors, whose sum is σ = 3320815262. Its totient is φ = 3320815260.

The previous prime is 3320815247. The next prime is 3320815297. The reversal of 3320815261 is 1625180233.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3214209636 + 106605625 = 56694^2 + 10325^2 .

It is a cyclic number.

It is not a de Polignac number, because 3320815261 - 2⁵ = 3320815229 is a prime.

It is a super-2 number, since 2×3320815261² = 22055627995380996242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3320810261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1660407630 + 1660407631.

It is an arithmetic number, because the mean of its divisors is an integer number (1660407631).

Almost surely, 2^3320815261 is an apocalyptic number.

It is an amenable number.

3320815261 is a deficient number, since it is larger than the sum of its proper divisors (1).

3320815261 is an equidigital number, since it uses as much as digits as its factorization.

3320815261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 3320815261 is about 57626.5152599044. The cubic root of 3320815261 is about 1491.9292848450.

Adding to 3320815261 its reverse (1625180233), we get a palindrome (4945995494).

The spelling of 3320815261 in words is "three billion, three hundred twenty million, eight hundred fifteen thousand, two hundred sixty-one".