3867643 has 8 divisors (see below), whose sum is σ = 4309200. Its totient is φ = 3446688.

The previous prime is 3867629. The next prime is 3867649. The reversal of 3867643 is 3467683.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3867643 - 2⁹ = 3867131 is a prime.

It is a d-powerful number, because it can be written as 3³ + 8⁷ + 6⁵ + 7⁵ + 6⁸ + 4⁸ + 3⁶ .

It is a Duffinian number.

3867643 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3867649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4753 + ... + 5506.

It is an arithmetic number, because the mean of its divisors is an integer number (538650).

Almost surely, 2^3867643 is an apocalyptic number.

3867643 is a deficient number, since it is larger than the sum of its proper divisors (441557).

3867643 is a wasteful number, since it uses less digits than its factorization.

3867643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10301.

The product of its digits is 72576, while the sum is 37.

The square root of 3867643 is about 1966.6324008314. The cubic root of 3867643 is about 156.9695669033.

The spelling of 3867643 in words is "three million, eight hundred sixty-seven thousand, six hundred forty-three".