3305812681 has 2 divisors, whose sum is σ = 3305812682. Its totient is φ = 3305812680.

The previous prime is 3305812663. The next prime is 3305812709. The reversal of 3305812681 is 1862185033.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2571402681 + 734410000 = 50709^2 + 27100^2 .

It is a cyclic number.

It is not a de Polignac number, because 3305812681 - 2⁷ = 3305812553 is a prime.

It is a super-2 number, since 2×3305812681² = 21856794963720815522, 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 3305812681.

It is not a weakly prime, because it can be changed into another prime (3305810681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1652906340 + 1652906341.

It is an arithmetic number, because the mean of its divisors is an integer number (1652906341).

Almost surely, 2^3305812681 is an apocalyptic number.

It is an amenable number.

3305812681 is a deficient number, since it is larger than the sum of its proper divisors (1).

3305812681 is an equidigital number, since it uses as much as digits as its factorization.

3305812681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 3305812681 is about 57496.1971003300. The cubic root of 3305812681 is about 1489.6791767558.

The spelling of 3305812681 in words is "three billion, three hundred five million, eight hundred twelve thousand, six hundred eighty-one".