8145385 has 4 divisors (see below), whose sum is σ = 9774468. Its totient is φ = 6516304.

The previous prime is 8145367. The next prime is 8145407. The reversal of 8145385 is 5835418.

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 2725801 + 5419584 = 1651^2 + 2328^2 .

It is a cyclic number.

It is not a de Polignac number, because 8145385 - 2¹¹ = 8143337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8145385.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 814534 + ... + 814543.

It is an arithmetic number, because the mean of its divisors is an integer number (2443617).

Almost surely, 2^8145385 is an apocalyptic number.

It is an amenable number.

8145385 is a deficient number, since it is larger than the sum of its proper divisors (1629083).

8145385 is a wasteful number, since it uses less digits than its factorization.

8145385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1629082.

The product of its digits is 19200, while the sum is 34.

The square root of 8145385 is about 2854.0120882715. The cubic root of 8145385 is about 201.2042757122.

The spelling of 8145385 in words is "eight million, one hundred forty-five thousand, three hundred eighty-five".