8574985261 has 4 divisors (see below), whose sum is σ = 8671333500. Its totient is φ = 8478637024.

The previous prime is 8574985241. The next prime is 8574985267. The reversal of 8574985261 is 1625894758.

It is a happy number.

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 6073084900 + 2501900361 = 77930^2 + 50019^2 .

It is a cyclic number.

It is not a de Polignac number, because 8574985261 - 2¹¹ = 8574983213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8574985267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48173986 + ... + 48174163.

It is an arithmetic number, because the mean of its divisors is an integer number (2167833375).

Almost surely, 2^8574985261 is an apocalyptic number.

It is an amenable number.

8574985261 is a deficient number, since it is larger than the sum of its proper divisors (96348239).

8574985261 is an equidigital number, since it uses as much as digits as its factorization.

8574985261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96348238.

The product of its digits is 4838400, while the sum is 55.

The square root of 8574985261 is about 92601.2163041069. The cubic root of 8574985261 is about 2046.8112440382.

The spelling of 8574985261 in words is "eight billion, five hundred seventy-four million, nine hundred eighty-five thousand, two hundred sixty-one".