8888561 has 16 divisors (see below), whose sum is σ = 10368000. Its totient is φ = 7534800.

The previous prime is 8888549. The next prime is 8888563. The reversal of 8888561 is 1658888.

It is a cyclic number.

It is not a de Polignac number, because 8888561 - 2⁶ = 8888497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8888563) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 14540 + ... + 15138.

It is an arithmetic number, because the mean of its divisors is an integer number (648000).

Almost surely, 2^8888561 is an apocalyptic number.

It is an amenable number.

8888561 is a deficient number, since it is larger than the sum of its proper divisors (1479439).

8888561 is a wasteful number, since it uses less digits than its factorization.

8888561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700.

The product of its digits is 122880, while the sum is 44.

The square root of 8888561 is about 2981.3689808543. The cubic root of 8888561 is about 207.1462866314.

It can be divided in two parts, 8888 and 561, that added together give a palindrome (9449).

The spelling of 8888561 in words is "eight million, eight hundred eighty-eight thousand, five hundred sixty-one".