8706643 has 8 divisors (see below), whose sum is σ = 9552816. Its totient is φ = 7869600.

The previous prime is 8706613. The next prime is 8706647. The reversal of 8706643 is 3466078.

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 8706643 - 2⁵ = 8706611 is a prime.

It is a Duffinian number.

8706643 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 8706599 and 8706608.

It is not an unprimeable number, because it can be changed into a prime (8706647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196 + ... + 4177.

It is an arithmetic number, because the mean of its divisors is an integer number (1194102).

Almost surely, 2^8706643 is an apocalyptic number.

8706643 is a deficient number, since it is larger than the sum of its proper divisors (846173).

8706643 is a wasteful number, since it uses less digits than its factorization.

8706643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4565.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 8706643 is about 2950.7021198352. The cubic root of 8706643 is about 205.7233459092.

The spelling of 8706643 in words is "eight million, seven hundred six thousand, six hundred forty-three".