8646545 has 4 divisors (see below), whose sum is σ = 10375860. Its totient is φ = 6917232.

The previous prime is 8646529. The next prime is 8646559. The reversal of 8646545 is 5456468.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4963984 + 3682561 = 2228^2 + 1919^2 .

It is a cyclic number.

It is not a de Polignac number, because 8646545 - 2⁴ = 8646529 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8646499 and 8646508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 864650 + ... + 864659.

It is an arithmetic number, because the mean of its divisors is an integer number (2593965).

Almost surely, 2^8646545 is an apocalyptic number.

It is an amenable number.

8646545 is a deficient number, since it is larger than the sum of its proper divisors (1729315).

8646545 is a wasteful number, since it uses less digits than its factorization.

8646545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729314.

The product of its digits is 115200, while the sum is 38.

The square root of 8646545 is about 2940.5008076857. The cubic root of 8646545 is about 205.2489143778.

It can be divided in two parts, 864654 and 5, that multiplied together give a triangular number (4323270 = T₂₉₄₀).

The spelling of 8646545 in words is "eight million, six hundred forty-six thousand, five hundred forty-five".