8210566385 has 16 divisors (see below), whose sum is σ = 11296426752. Its totient is φ = 5611992000.

The previous prime is 8210566369. The next prime is 8210566409. The reversal of 8210566385 is 5836650128.

It is not a de Polignac number, because 8210566385 - 2⁴ = 8210566369 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 366266 + ... + 388035.

It is an arithmetic number, because the mean of its divisors is an integer number (706026672).

Almost surely, 2^8210566385 is an apocalyptic number.

It is an amenable number.

8210566385 is a deficient number, since it is larger than the sum of its proper divisors (3085860367).

8210566385 is a wasteful number, since it uses less digits than its factorization.

8210566385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754624.

The product of its (nonzero) digits is 345600, while the sum is 44.

The square root of 8210566385 is about 90612.1756995162. The cubic root of 8210566385 is about 2017.3954590931.

The spelling of 8210566385 in words is "eight billion, two hundred ten million, five hundred sixty-six thousand, three hundred eighty-five".