3668081 has 2 divisors, whose sum is σ = 3668082. Its totient is φ = 3668080.

The previous prime is 3668059. The next prime is 3668087. The reversal of 3668081 is 1808663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3610000 + 58081 = 1900^2 + 241^2 .

It is a cyclic number.

It is not a de Polignac number, because 3668081 - 2¹⁸ = 3405937 is a prime.

It is a super-2 number, since 2×3668081² = 26909636445122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3668087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1834040 + 1834041.

It is an arithmetic number, because the mean of its divisors is an integer number (1834041).

Almost surely, 2^3668081 is an apocalyptic number.

It is an amenable number.

3668081 is a deficient number, since it is larger than the sum of its proper divisors (1).

3668081 is an equidigital number, since it uses as much as digits as its factorization.

3668081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 3668081 is about 1915.2234856538. The cubic root of 3668081 is about 154.2219910845.

The spelling of 3668081 in words is "three million, six hundred sixty-eight thousand, eighty-one".