3686237 has 2 divisors, whose sum is σ = 3686238. Its totient is φ = 3686236.

The previous prime is 3686183. The next prime is 3686239. The reversal of 3686237 is 7326863.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3290596 + 395641 = 1814^2 + 629^2 .

It is a cyclic number.

It is not a de Polignac number, because 3686237 - 2¹⁸ = 3424093 is a prime.

Together with 3686239, 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 + 6⁷ + 8³ + 6⁸ + 2¹⁷ + 3¹³ + 7² .

It is a junction number, because it is equal to n+sod(n) for n = 3686197 and 3686206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3686239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1843118 + 1843119.

It is an arithmetic number, because the mean of its divisors is an integer number (1843119).

Almost surely, 2^3686237 is an apocalyptic number.

It is an amenable number.

3686237 is a deficient number, since it is larger than the sum of its proper divisors (1).

3686237 is an equidigital number, since it uses as much as digits as its factorization.

3686237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 35.

The square root of 3686237 is about 1919.9575516141. The cubic root of 3686237 is about 154.4760246693.

The spelling of 3686237 in words is "three million, six hundred eighty-six thousand, two hundred thirty-seven".