8645973 has 16 divisors (see below), whose sum is σ = 13630080. Its totient is φ = 4769856.

The previous prime is 8645971. The next prime is 8645981. The reversal of 8645973 is 3795468.

It is a happy number.

It is not a de Polignac number, because 8645973 - 2¹ = 8645971 is a prime.

It is a super-3 number, since 3×8645973³ (a number of 22 digits) contains 333 as substring.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8645971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6490 + ... + 7707.

It is an arithmetic number, because the mean of its divisors is an integer number (851880).

Almost surely, 2^8645973 is an apocalyptic number.

It is an amenable number.

8645973 is a deficient number, since it is larger than the sum of its proper divisors (4984107).

8645973 is a wasteful number, since it uses less digits than its factorization.

8645973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14236.

The product of its digits is 181440, while the sum is 42.

The square root of 8645973 is about 2940.4035437334. The cubic root of 8645973 is about 205.2443882938.

The spelling of 8645973 in words is "eight million, six hundred forty-five thousand, nine hundred seventy-three".