8574646721 has 8 divisors (see below), whose sum is σ = 8960238144. Its totient is φ = 8190120400.

The previous prime is 8574646679. The next prime is 8574646739. The reversal of 8574646721 is 1276464758.

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

It is a cyclic number.

It is not a de Polignac number, because 8574646721 - 2⁶ = 8574646657 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 8574646721.

It is not an unprimeable number, because it can be changed into a prime (8574646121) 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, 249791 + ... + 282036.

It is an arithmetic number, because the mean of its divisors is an integer number (1120029768).

Almost surely, 2^8574646721 is an apocalyptic number.

It is an amenable number.

8574646721 is a deficient number, since it is larger than the sum of its proper divisors (385591423).

8574646721 is a wasteful number, since it uses less digits than its factorization.

8574646721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532551.

The product of its digits is 2257920, while the sum is 50.

The square root of 8574646721 is about 92599.3883403125. The cubic root of 8574646721 is about 2046.7843076810.

The spelling of 8574646721 in words is "eight billion, five hundred seventy-four million, six hundred forty-six thousand, seven hundred twenty-one".