8640246287 has 2 divisors, whose sum is σ = 8640246288. Its totient is φ = 8640246286.

The previous prime is 8640246247. The next prime is 8640246317. The reversal of 8640246287 is 7826420468.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8640246287 - 2¹⁴ = 8640229903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8640246247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4320123143 + 4320123144.

It is an arithmetic number, because the mean of its divisors is an integer number (4320123144).

Almost surely, 2^8640246287 is an apocalyptic number.

8640246287 is a deficient number, since it is larger than the sum of its proper divisors (1).

8640246287 is an equidigital number, since it uses as much as digits as its factorization.

8640246287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1032192, while the sum is 47.

The square root of 8640246287 is about 92952.9251126612. The cubic root of 8640246287 is about 2051.9906332734.

The spelling of 8640246287 in words is "eight billion, six hundred forty million, two hundred forty-six thousand, two hundred eighty-seven".