8561366 has 16 divisors (see below), whose sum is σ = 14151888. Its totient is φ = 3852000.

The previous prime is 8561347. The next prime is 8561383. The reversal of 8561366 is 6631658.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296 + ... + 4148.

It is an arithmetic number, because the mean of its divisors is an integer number (884493).

Almost surely, 2^8561366 is an apocalyptic number.

8561366 is a deficient number, since it is larger than the sum of its proper divisors (5590522).

8561366 is a wasteful number, since it uses less digits than its factorization.

8561366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3967.

The product of its digits is 25920, while the sum is 35.

The square root of 8561366 is about 2925.9812029471. The cubic root of 8561366 is about 204.5727050622.

It can be divided in two parts, 856 and 1366, that added together give a palindrome (2222).

The spelling of 8561366 in words is "eight million, five hundred sixty-one thousand, three hundred sixty-six".