8205145 has 8 divisors (see below), whose sum is σ = 10603656. Its totient is φ = 6059136.

The previous prime is 8205143. The next prime is 8205163. The reversal of 8205145 is 5415028.

8205145 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 65536 + 8139609 = 256^2 + 2853^2 .

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 8205145 - 2¹ = 8205143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8205143) 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, 63052 + ... + 63181.

It is an arithmetic number, because the mean of its divisors is an integer number (1325457).

Almost surely, 2^8205145 is an apocalyptic number.

It is an amenable number.

8205145 is a deficient number, since it is larger than the sum of its proper divisors (2398511).

8205145 is a wasteful number, since it uses less digits than its factorization.

8205145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126251.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 8205145 is about 2864.4624277515. The cubic root of 8205145 is about 201.6951336845.

The spelling of 8205145 in words is "eight million, two hundred five thousand, one hundred forty-five".