3666251 has 2 divisors, whose sum is σ = 3666252. Its totient is φ = 3666250.

The previous prime is 3666241. The next prime is 3666253. The reversal of 3666251 is 1526663.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3666251 - 2¹⁰ = 3665227 is a prime.

It is a Sophie Germain prime.

Together with 3666253, it forms a pair of twin primes.

It is a Chen prime.

It is a d-powerful number, because it can be written as 3⁶ + 6 + 6 + 6⁸ + 2¹⁵ + 5⁹ + 1 .

It is not a weakly prime, because it can be changed into another prime (3666253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1833125 + 1833126.

It is an arithmetic number, because the mean of its divisors is an integer number (1833126).

Almost surely, 2^3666251 is an apocalyptic number.

3666251 is a deficient number, since it is larger than the sum of its proper divisors (1).

3666251 is an equidigital number, since it uses as much as digits as its factorization.

3666251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 29.

The square root of 3666251 is about 1914.7456750180. The cubic root of 3666251 is about 154.1963397798.

The spelling of 3666251 in words is "three million, six hundred sixty-six thousand, two hundred fifty-one".