8574561605 has 4 divisors (see below), whose sum is σ = 10289473932. Its totient is φ = 6859649280.

The previous prime is 8574561571. The next prime is 8574561637. The reversal of 8574561605 is 5061654758.

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 1383691204 + 7190870401 = 37198^2 + 84799^2 .

It is a de Polignac number, because none of the positive numbers 2^k-8574561605 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 8574561605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 857456156 + ... + 857456165.

It is an arithmetic number, because the mean of its divisors is an integer number (2572368483).

Almost surely, 2^8574561605 is an apocalyptic number.

It is an amenable number.

8574561605 is a deficient number, since it is larger than the sum of its proper divisors (1714912327).

8574561605 is a wasteful number, since it uses less digits than its factorization.

8574561605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714912326.

The product of its (nonzero) digits is 1008000, while the sum is 47.

The square root of 8574561605 is about 92598.9287465033. The cubic root of 8574561605 is about 2046.7775352088. Note that the first 3 decimals are identical.

The spelling of 8574561605 in words is "eight billion, five hundred seventy-four million, five hundred sixty-one thousand, six hundred five".