8107145 has 8 divisors (see below), whose sum is σ = 9912456. Its totient is φ = 6363136.

The previous prime is 8107139. The next prime is 8107157. The reversal of 8107145 is 5417018.

It can be written as a sum of positive squares in 4 ways, for example, as 2050624 + 6056521 = 1432^2 + 2461^2 .

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 8107145 - 2¹⁶ = 8041609 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 15032 + ... + 15561.

It is an arithmetic number, because the mean of its divisors is an integer number (1239057).

Almost surely, 2^8107145 is an apocalyptic number.

It is an amenable number.

8107145 is a deficient number, since it is larger than the sum of its proper divisors (1805311).

8107145 is a wasteful number, since it uses less digits than its factorization.

8107145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30651.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 8107145 is about 2847.3048660093. The cubic root of 8107145 is about 200.8889182682. Note that the first 3 decimals are identical.

The spelling of 8107145 in words is "eight million, one hundred seven thousand, one hundred forty-five".