8001866766 has 16 divisors (see below), whose sum is σ = 16004620800. Its totient is φ = 2667141048.

The previous prime is 8001866737. The next prime is 8001866767. The reversal of 8001866766 is 6676681008.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8001866767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165955 + ... + 208673.

It is an arithmetic number, because the mean of its divisors is an integer number (1000288800).

Almost surely, 2^8001866766 is an apocalyptic number.

8001866766 is an abundant number, since it is smaller than the sum of its proper divisors (8002754034).

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

8001866766 is a wasteful number, since it uses less digits than its factorization.

8001866766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73943.

The product of its (nonzero) digits is 580608, while the sum is 48.

The square root of 8001866766 is about 89453.1540304756. The cubic root of 8001866766 is about 2000.1555517348.

The spelling of 8001866766 in words is "eight billion, one million, eight hundred sixty-six thousand, seven hundred sixty-six".