8673643 has 12 divisors (see below), whose sum is σ = 9645160. Its totient is φ = 7793280.

The previous prime is 8673611. The next prime is 8673677. The reversal of 8673643 is 3463768.

It is a happy number.

It is not a de Polignac number, because 8673643 - 2⁵ = 8673611 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 8⁷ + 6 + 7⁸ + 3⁵ + 6⁷ + 4³ + 3¹² .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8673683) 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 11 ways as a sum of consecutive naturals, for example, 11368 + ... + 12106.

Almost surely, 2^8673643 is an apocalyptic number.

8673643 is a deficient number, since it is larger than the sum of its proper divisors (971517).

8673643 is a wasteful number, since it uses less digits than its factorization.

8673643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858 (or 847 counting only the distinct ones).

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

The square root of 8673643 is about 2945.1049217303. The cubic root of 8673643 is about 205.4631053243.

It can be divided in two parts, 8673 and 643, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 8673643 in words is "eight million, six hundred seventy-three thousand, six hundred forty-three".