8644521374 has 8 divisors (see below), whose sum is σ = 12967417848. Its totient is φ = 4322048760.

The previous prime is 8644521311. The next prime is 8644521377. The reversal of 8644521374 is 4731254468.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8644521377) 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, 48812 + ... + 140255.

It is an arithmetic number, because the mean of its divisors is an integer number (1620927231).

Almost surely, 2^8644521374 is an apocalyptic number.

8644521374 is a deficient number, since it is larger than the sum of its proper divisors (4322896474).

8644521374 is a wasteful number, since it uses less digits than its factorization.

8644521374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211930.

The product of its digits is 645120, while the sum is 44.

The square root of 8644521374 is about 92975.9182476839. The cubic root of 8644521374 is about 2052.3290106666.

The spelling of 8644521374 in words is "eight billion, six hundred forty-four million, five hundred twenty-one thousand, three hundred seventy-four".