8454863666 has 16 divisors (see below), whose sum is σ = 12900682080. Its totient is φ = 4154674560.

The previous prime is 8454863639. The next prime is 8454863707. The reversal of 8454863666 is 6663684548.

It is a happy number.

It is a super-2 number, since 2×8454863666² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 600386 + ... + 614306.

It is an arithmetic number, because the mean of its divisors is an integer number (806292630).

Almost surely, 2^8454863666 is an apocalyptic number.

8454863666 is a deficient number, since it is larger than the sum of its proper divisors (4445818414).

8454863666 is a wasteful number, since it uses less digits than its factorization.

8454863666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19129.

The product of its digits is 19906560, while the sum is 56.

The square root of 8454863666 is about 91950.3326040749. The cubic root of 8454863666 is about 2037.2087664135.

The spelling of 8454863666 in words is "eight billion, four hundred fifty-four million, eight hundred sixty-three thousand, six hundred sixty-six".