8260645 has 4 divisors (see below), whose sum is σ = 9912780. Its totient is φ = 6608512.

The previous prime is 8260643. The next prime is 8260667. The reversal of 8260645 is 5460628.

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 1940449 + 6320196 = 1393^2 + 2514^2 .

It is a cyclic number.

It is not a de Polignac number, because 8260645 - 2¹ = 8260643 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 8³ + 2²¹ + 6⁵ + 0 + 6⁵ + 4¹¹ + 5⁹ .

8260645 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8260643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 826060 + ... + 826069.

It is an arithmetic number, because the mean of its divisors is an integer number (2478195).

Almost surely, 2^8260645 is an apocalyptic number.

It is an amenable number.

8260645 is a deficient number, since it is larger than the sum of its proper divisors (1652135).

8260645 is a wasteful number, since it uses less digits than its factorization.

8260645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652134.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 8260645 is about 2874.1337825508. The cubic root of 8260645 is about 202.1488707498.

The spelling of 8260645 in words is "eight million, two hundred sixty thousand, six hundred forty-five".