8021765860 has 48 divisors (see below), whose sum is σ = 18062472960. Its totient is φ = 2981721600.

The previous prime is 8021765839. The next prime is 8021765881. The reversal of 8021765860 is 685671208.

It is an interprime number because it is at equal distance from previous prime (8021765839) and next prime (8021765881).

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, 122466 + ... + 176185.

It is an arithmetic number, because the mean of its divisors is an integer number (376301520).

Almost surely, 2^8021765860 is an apocalyptic number.

It is an amenable number.

8021765860 is an abundant number, since it is smaller than the sum of its proper divisors (10040707100).

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

8021765860 is a wasteful number, since it uses less digits than its factorization.

8021765860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298756 (or 298754 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 8021765860 is about 89564.3113075738. The cubic root of 8021765860 is about 2001.8121791741.

The spelling of 8021765860 in words is "eight billion, twenty-one million, seven hundred sixty-five thousand, eight hundred sixty".