8436561 has 16 divisors (see below), whose sum is σ = 13415424. Its totient is φ = 4611024.

The previous prime is 8436541. The next prime is 8436569. The reversal of 8436561 is 1656348.

It is not a de Polignac number, because 8436561 - 2¹¹ = 8434513 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8436569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8251 + ... + 9216.

It is an arithmetic number, because the mean of its divisors is an integer number (838464).

Almost surely, 2^8436561 is an apocalyptic number.

It is an amenable number.

8436561 is a deficient number, since it is larger than the sum of its proper divisors (4978863).

8436561 is a wasteful number, since it uses less digits than its factorization.

8436561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17500.

The product of its digits is 17280, while the sum is 33.

The square root of 8436561 is about 2904.5758726534. The cubic root of 8436561 is about 203.5737688514.

The spelling of 8436561 in words is "eight million, four hundred thirty-six thousand, five hundred sixty-one".