3669881 has 2 divisors, whose sum is σ = 3669882. Its totient is φ = 3669880.

The previous prime is 3669851. The next prime is 3669889. The reversal of 3669881 is 1889663.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3644281 + 25600 = 1909^2 + 160^2 .

It is a cyclic number.

It is not a de Polignac number, because 3669881 - 2¹⁰ = 3668857 is a prime.

It is a super-2 number, since 2×3669881² = 26936053108322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3669889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1834940 + 1834941.

It is an arithmetic number, because the mean of its divisors is an integer number (1834941).

Almost surely, 2^3669881 is an apocalyptic number.

It is an amenable number.

3669881 is a deficient number, since it is larger than the sum of its proper divisors (1).

3669881 is an equidigital number, since it uses as much as digits as its factorization.

3669881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 41.

The square root of 3669881 is about 1915.6933470678. The cubic root of 3669881 is about 154.2472135545.

The spelling of 3669881 in words is "three million, six hundred sixty-nine thousand, eight hundred eighty-one".