8530645 has 4 divisors (see below), whose sum is σ = 10236780. Its totient is φ = 6824512.

The previous prime is 8530637. The next prime is 8530693. The reversal of 8530645 is 5460358.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5460358 = 2 ⋅2730179.

It can be written as a sum of positive squares in 2 ways, for example, as 6115729 + 2414916 = 2473^2 + 1554^2 .

It is a cyclic number.

It is not a de Polignac number, because 8530645 - 2³ = 8530637 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 853060 + ... + 853069.

It is an arithmetic number, because the mean of its divisors is an integer number (2559195).

Almost surely, 2^8530645 is an apocalyptic number.

It is an amenable number.

8530645 is a deficient number, since it is larger than the sum of its proper divisors (1706135).

8530645 is a wasteful number, since it uses less digits than its factorization.

8530645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706134.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 8530645 is about 2920.7267931116. The cubic root of 8530645 is about 204.3277203928.

The spelling of 8530645 in words is "eight million, five hundred thirty thousand, six hundred forty-five".