3686222 has 4 divisors (see below), whose sum is σ = 5529336. Its totient is φ = 1843110.

The previous prime is 3686183. The next prime is 3686237. The reversal of 3686222 is 2226863.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2226863 = 1009 ⋅2207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 921554 + ... + 921557.

It is an arithmetic number, because the mean of its divisors is an integer number (1382334).

Almost surely, 2^3686222 is an apocalyptic number.

3686222 is a deficient number, since it is larger than the sum of its proper divisors (1843114).

3686222 is a wasteful number, since it uses less digits than its factorization.

3686222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1843113.

The product of its digits is 6912, while the sum is 29.

The square root of 3686222 is about 1919.9536452738. The cubic root of 3686222 is about 154.4758151382.

The spelling of 3686222 in words is "three million, six hundred eighty-six thousand, two hundred twenty-two".