8645065890 has 32 divisors (see below), whose sum is σ = 21650253696. Its totient is φ = 2205118080.

The previous prime is 8645065843. The next prime is 8645065901. The reversal of 8645065890 is 985605468.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6263851 + ... + 6265230.

It is an arithmetic number, because the mean of its divisors is an integer number (676570428).

Almost surely, 2^8645065890 is an apocalyptic number.

8645065890 is an abundant number, since it is smaller than the sum of its proper divisors (13005187806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8645065890 is a wasteful number, since it uses less digits than its factorization.

8645065890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12529114.

The product of its (nonzero) digits is 2073600, while the sum is 51.

The square root of 8645065890 is about 92978.8464652041. The cubic root of 8645065890 is about 2052.3721016399.

The spelling of 8645065890 in words is "eight billion, six hundred forty-five million, sixty-five thousand, eight hundred ninety".