8182645 has 4 divisors (see below), whose sum is σ = 9819180. Its totient is φ = 6546112.

The previous prime is 8182639. The next prime is 8182649. The reversal of 8182645 is 5462818.

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 5116644 + 3066001 = 2262^2 + 1751^2 .

It is a cyclic number.

It is not a de Polignac number, because 8182645 - 2³ = 8182637 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8182645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8182649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 818260 + ... + 818269.

It is an arithmetic number, because the mean of its divisors is an integer number (2454795).

Almost surely, 2^8182645 is an apocalyptic number.

It is an amenable number.

8182645 is a deficient number, since it is larger than the sum of its proper divisors (1636535).

8182645 is a wasteful number, since it uses less digits than its factorization.

8182645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636534.

The product of its digits is 15360, while the sum is 34.

The square root of 8182645 is about 2860.5322931231. The cubic root of 8182645 is about 201.5106033289.

The spelling of 8182645 in words is "eight million, one hundred eighty-two thousand, six hundred forty-five".