3666331 has 2 divisors, whose sum is σ = 3666332. Its totient is φ = 3666330.

The previous prime is 3666323. The next prime is 3666347. The reversal of 3666331 is 1336663.

It is a weak prime.

It is an emirp because it is prime and its reverse (1336663) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3666331 - 2³ = 3666323 is a prime.

It is a super-2 number, since 2×3666331² = 26883966003122, which contains 22 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3666331.

It is not a weakly prime, because it can be changed into another prime (3666301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1833165 + 1833166.

It is an arithmetic number, because the mean of its divisors is an integer number (1833166).

Almost surely, 2^3666331 is an apocalyptic number.

3666331 is a deficient number, since it is larger than the sum of its proper divisors (1).

3666331 is an equidigital number, since it uses as much as digits as its factorization.

3666331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 28.

The square root of 3666331 is about 1914.7665654069. The cubic root of 3666331 is about 154.1974613267.

The spelling of 3666331 in words is "three million, six hundred sixty-six thousand, three hundred thirty-one".