8649973 has 2 divisors, whose sum is σ = 8649974. Its totient is φ = 8649972.

The previous prime is 8649967. The next prime is 8650003. The reversal of 8649973 is 3799468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7193124 + 1456849 = 2682^2 + 1207^2 .

It is a cyclic number.

It is not a de Polignac number, because 8649973 - 2¹³ = 8641781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8679973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4324986 + 4324987.

It is an arithmetic number, because the mean of its divisors is an integer number (4324987).

Almost surely, 2^8649973 is an apocalyptic number.

It is an amenable number.

8649973 is a deficient number, since it is larger than the sum of its proper divisors (1).

8649973 is an equidigital number, since it uses as much as digits as its factorization.

8649973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 46.

The square root of 8649973 is about 2941.0836438293. The cubic root of 8649973 is about 205.2760350492.

The spelling of 8649973 in words is "eight million, six hundred forty-nine thousand, nine hundred seventy-three".