8728367873 has 2 divisors, whose sum is σ = 8728367874. Its totient is φ = 8728367872.

The previous prime is 8728367827. The next prime is 8728367899. The reversal of 8728367873 is 3787638278.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8403755584 + 324612289 = 91672^2 + 18017^2 .

It is a cyclic number.

It is not a de Polignac number, because 8728367873 - 2¹⁶ = 8728302337 is a prime.

It is not a weakly prime, because it can be changed into another prime (8728367173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4364183936 + 4364183937.

It is an arithmetic number, because the mean of its divisors is an integer number (4364183937).

Almost surely, 2^8728367873 is an apocalyptic number.

It is an amenable number.

8728367873 is a deficient number, since it is larger than the sum of its proper divisors (1).

8728367873 is an equidigital number, since it uses as much as digits as its factorization.

8728367873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18966528, while the sum is 59.

The square root of 8728367873 is about 93425.7345328363. The cubic root of 8728367873 is about 2058.9431120625.

The spelling of 8728367873 in words is "eight billion, seven hundred twenty-eight million, three hundred sixty-seven thousand, eight hundred seventy-three".