8520920087 has 2 divisors, whose sum is σ = 8520920088. Its totient is φ = 8520920086.

The previous prime is 8520920017. The next prime is 8520920117. The reversal of 8520920087 is 7800290258.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8520920087 - 2²⁰ = 8519871511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8520920017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4260460043 + 4260460044.

It is an arithmetic number, because the mean of its divisors is an integer number (4260460044).

Almost surely, 2^8520920087 is an apocalyptic number.

8520920087 is a deficient number, since it is larger than the sum of its proper divisors (1).

8520920087 is an equidigital number, since it uses as much as digits as its factorization.

8520920087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 8520920087 is about 92308.8299514191. The cubic root of 8520920087 is about 2042.5004651361.

The spelling of 8520920087 in words is "eight billion, five hundred twenty million, nine hundred twenty thousand, eighty-seven".