8266666672 has 20 divisors (see below), whose sum is σ = 17472727656. Its totient is φ = 3757575680.

The previous prime is 8266666663. The next prime is 8266666673. The reversal of 8266666672 is 2766666628.

It is not an unprimeable number, because it can be changed into a prime (8266666673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23484673 + ... + 23485024.

Almost surely, 2^8266666672 is an apocalyptic number.

It is an amenable number.

8266666672 is an abundant number, since it is smaller than the sum of its proper divisors (9206060984).

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

8266666672 is a wasteful number, since it uses less digits than its factorization.

8266666672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46969716 (or 46969710 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 55.

The square root of 8266666672 is about 90921.2113425685. The cubic root of 8266666672 is about 2021.9797823611.

It can be divided in two parts, 826666 and 6672, that added together give a palindrome (833338).

The spelling of 8266666672 in words is "eight billion, two hundred sixty-six million, six hundred sixty-six thousand, six hundred seventy-two".