8745561 has 12 divisors (see below), whose sum is σ = 13781040. Its totient is φ = 5300280.

The previous prime is 8745557. The next prime is 8745571. The reversal of 8745561 is 1655478.

It is not a de Polignac number, because 8745561 - 2² = 8745557 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (8745551) 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 11 ways as a sum of consecutive naturals, for example, 44071 + ... + 44268.

It is an arithmetic number, because the mean of its divisors is an integer number (1148420).

Almost surely, 2^8745561 is an apocalyptic number.

It is an amenable number.

8745561 is a deficient number, since it is larger than the sum of its proper divisors (5035479).

8745561 is a wasteful number, since it uses less digits than its factorization.

8745561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88356 (or 88353 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 8745561 is about 2957.2894684153. The cubic root of 8745561 is about 206.0294126476.

The spelling of 8745561 in words is "eight million, seven hundred forty-five thousand, five hundred sixty-one".