8505613 has 8 divisors (see below), whose sum is σ = 8842680. Its totient is φ = 8171520.

The previous prime is 8505577. The next prime is 8505619. The reversal of 8505613 is 3165058.

It can be written as a sum of positive squares in 4 ways, for example, as 1630729 + 6874884 = 1277^2 + 2622^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8505613 - 2¹³ = 8497421 is a prime.

8505613 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8505619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6381 + ... + 7597.

It is an arithmetic number, because the mean of its divisors is an integer number (1105335).

Almost surely, 2^8505613 is an apocalyptic number.

It is an amenable number.

8505613 is a deficient number, since it is larger than the sum of its proper divisors (337067).

8505613 is a wasteful number, since it uses less digits than its factorization.

8505613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1487.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 8505613 is about 2916.4384101160. The cubic root of 8505613 is about 204.1276674272.

The spelling of 8505613 in words is "eight million, five hundred five thousand, six hundred thirteen".