8366281668 has 30 divisors (see below), whose sum is σ = 21871113726. Its totient is φ = 2788760448.

The previous prime is 8366281661. The next prime is 8366281681. The reversal of 8366281668 is 8661826638.

8366281668 is a `hidden beast` number, since 8 + 3 + 6 + 628 + 1 + 6 + 6 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8226852804 + 139428864 = 90702^2 + 11808^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (8366281661) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 12910605 + ... + 12911252.

Almost surely, 2^8366281668 is an apocalyptic number.

It is an amenable number.

8366281668 is an abundant number, since it is smaller than the sum of its proper divisors (13504832058).

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

8366281668 is a wasteful number, since it uses less digits than its factorization.

8366281668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25821873 (or 25821862 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The square root of 8366281668 is about 91467.3803494995. The cubic root of 8366281668 is about 2030.0691304404.

The spelling of 8366281668 in words is "eight billion, three hundred sixty-six million, two hundred eighty-one thousand, six hundred sixty-eight".