8563668 has 24 divisors (see below), whose sum is σ = 20311200. Its totient is φ = 2807520.

The previous prime is 8563637. The next prime is 8563693. The reversal of 8563668 is 8663658.

It is a super-2 number, since 2×8563668² = 146672819228448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5118 + ... + 6581.

It is an arithmetic number, because the mean of its divisors is an integer number (846300).

Almost surely, 2^8563668 is an apocalyptic number.

It is an amenable number.

8563668 is an abundant number, since it is smaller than the sum of its proper divisors (11747532).

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

8563668 is a wasteful number, since it uses less digits than its factorization.

8563668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11767 (or 11765 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 8563668 is about 2926.3745488232. The cubic root of 8563668 is about 204.5910387474.

The spelling of 8563668 in words is "eight million, five hundred sixty-three thousand, six hundred sixty-eight".