8649873 has 6 divisors (see below), whose sum is σ = 12494274. Its totient is φ = 5766576.

The previous prime is 8649871. The next prime is 8649881. The reversal of 8649873 is 3789468.

It is a happy number.

8649873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 4717584 + 3932289 = 2172^2 + 1983^2 .

It is not a de Polignac number, because 8649873 - 2¹ = 8649871 is a prime.

It is a super-2 number, since 2×8649873² = 149640605832258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8649871) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 480540 + ... + 480557.

It is an arithmetic number, because the mean of its divisors is an integer number (2082379).

Almost surely, 2^8649873 is an apocalyptic number.

It is an amenable number.

8649873 is a deficient number, since it is larger than the sum of its proper divisors (3844401).

8649873 is a wasteful number, since it uses less digits than its factorization.

8649873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961103 (or 961100 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 8649873 is about 2941.0666432436. The cubic root of 8649873 is about 205.2752439992.

The spelling of 8649873 in words is "eight million, six hundred forty-nine thousand, eight hundred seventy-three".