8144505 has 36 divisors (see below), whose sum is σ = 14791140. Its totient is φ = 4140864.

The previous prime is 8144497. The next prime is 8144531. The reversal of 8144505 is 5054418.

It can be written as a sum of positive squares in 2 ways, for example, as 3594816 + 4549689 = 1896^2 + 2133^2 .

It is not a de Polignac number, because 8144505 - 2³ = 8144497 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 (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 103056 + ... + 103134.

It is an arithmetic number, because the mean of its divisors is an integer number (410865).

Almost surely, 2^8144505 is an apocalyptic number.

It is an amenable number.

8144505 is a deficient number, since it is larger than the sum of its proper divisors (6646635).

8144505 is a wasteful number, since it uses less digits than its factorization.

8144505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 8144505 is about 2853.8579151738. The cubic root of 8144505 is about 201.1970296402.

It can be divided in two parts, 8144 and 505, that added together give a square (8649 = 93²).

The spelling of 8144505 in words is "eight million, one hundred forty-four thousand, five hundred five".