8205945 has 32 divisors (see below), whose sum is σ = 14684544. Its totient is φ = 3878400.

The previous prime is 8205941. The next prime is 8205949. The reversal of 8205945 is 5495028.

It is an interprime number because it is at equal distance from previous prime (8205941) and next prime (8205949).

It is not a de Polignac number, because 8205945 - 2² = 8205941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (8205941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6159 + ... + 7371.

It is an arithmetic number, because the mean of its divisors is an integer number (458892).

Almost surely, 2^8205945 is an apocalyptic number.

It is an amenable number.

8205945 is a deficient number, since it is larger than the sum of its proper divisors (6478599).

8205945 is a wasteful number, since it uses less digits than its factorization.

8205945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 8205945 is about 2864.6020666054. The cubic root of 8205945 is about 201.7016885499.

The spelling of 8205945 in words is "eight million, two hundred five thousand, nine hundred forty-five".