8091645 has 16 divisors (see below), whose sum is σ = 13003200. Its totient is φ = 4296704.

The previous prime is 8091617. The next prime is 8091679. The reversal of 8091645 is 5461908.

It is a cyclic number.

It is not a de Polignac number, because 8091645 - 2¹¹ = 8089597 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2806 + ... + 4904.

It is an arithmetic number, because the mean of its divisors is an integer number (812700).

Almost surely, 2^8091645 is an apocalyptic number.

It is an amenable number.

8091645 is a deficient number, since it is larger than the sum of its proper divisors (4911555).

8091645 is a wasteful number, since it uses less digits than its factorization.

8091645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2364.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 8091645 is about 2844.5816915673. The cubic root of 8091645 is about 200.7608105004.

The spelling of 8091645 in words is "eight million, ninety-one thousand, six hundred forty-five".