8906643 has 12 divisors (see below), whose sum is σ = 12932400. Its totient is φ = 5906736.

The previous prime is 8906629. The next prime is 8906659. The reversal of 8906643 is 3466098.

8906643 is a `hidden beast` number, since 8 + 9 + 0 + 6 + 643 = 666.

It is not a de Polignac number, because 8906643 - 2⁴ = 8906627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8906598 and 8906607.

It is not an unprimeable number, because it can be changed into a prime (8906663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 696 + ... + 4277.

It is an arithmetic number, because the mean of its divisors is an integer number (1077700).

Almost surely, 2^8906643 is an apocalyptic number.

8906643 is a deficient number, since it is larger than the sum of its proper divisors (4025757).

8906643 is a wasteful number, since it uses less digits than its factorization.

8906643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5178 (or 5175 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 8906643 is about 2984.3999396864. The cubic root of 8906643 is about 207.2866573887.

The spelling of 8906643 in words is "eight million, nine hundred six thousand, six hundred forty-three".