4086643 has 4 divisors (see below), whose sum is σ = 4458168. Its totient is φ = 3715120.

The previous prime is 4086631. The next prime is 4086673. The reversal of 4086643 is 3466804.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4086643 - 2⁵ = 4086611 is a prime.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (4086673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185746 + ... + 185767.

It is an arithmetic number, because the mean of its divisors is an integer number (1114542).

Almost surely, 2^4086643 is an apocalyptic number.

4086643 is a deficient number, since it is larger than the sum of its proper divisors (371525).

4086643 is a wasteful number, since it uses less digits than its factorization.

4086643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371524.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 4086643 is about 2021.5447064065. The cubic root of 4086643 is about 159.8780711696.

The spelling of 4086643 in words is "four million, eighty-six thousand, six hundred forty-three".