8642724385 has 8 divisors (see below), whose sum is σ = 10373907456. Its totient is φ = 6912420720.

The previous prime is 8642724383. The next prime is 8642724457. The reversal of 8642724385 is 5834272468.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8642724385 - 2¹ = 8642724383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8642724383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198031 + ... + 237700.

It is an arithmetic number, because the mean of its divisors is an integer number (1296738432).

Almost surely, 2^8642724385 is an apocalyptic number.

It is an amenable number.

8642724385 is a deficient number, since it is larger than the sum of its proper divisors (1731183071).

8642724385 is a wasteful number, since it uses less digits than its factorization.

8642724385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439703.

The product of its digits is 2580480, while the sum is 49.

The square root of 8642724385 is about 92966.2540118725. The cubic root of 8642724385 is about 2052.1867907920.

The spelling of 8642724385 in words is "eight billion, six hundred forty-two million, seven hundred twenty-four thousand, three hundred eighty-five".