3366683681 has 2 divisors, whose sum is σ = 3366683682. Its totient is φ = 3366683680.

The previous prime is 3366683657. The next prime is 3366683699. The reversal of 3366683681 is 1863866633.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2996467600 + 370216081 = 54740^2 + 19241^2 .

It is a cyclic number.

It is not a de Polignac number, because 3366683681 - 2¹⁸ = 3366421537 is a prime.

It is a super-2 number, since 2×3366683681² = 22669118015823419522, 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 (3366683611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1683341840 + 1683341841.

It is an arithmetic number, because the mean of its divisors is an integer number (1683341841).

Almost surely, 2^3366683681 is an apocalyptic number.

It is an amenable number.

3366683681 is a deficient number, since it is larger than the sum of its proper divisors (1).

3366683681 is an equidigital number, since it uses as much as digits as its factorization.

3366683681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2239488, while the sum is 50.

The square root of 3366683681 is about 58023.1305687654. The cubic root of 3366683681 is about 1498.7669393928.

The spelling of 3366683681 in words is "three billion, three hundred sixty-six million, six hundred eighty-three thousand, six hundred eighty-one".