8625768821 has 8 divisors (see below), whose sum is σ = 9002508864. Its totient is φ = 8249171040.

The previous prime is 8625768797. The next prime is 8625768829. The reversal of 8625768821 is 1288675268.

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 8625768821 - 2⁶ = 8625768757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8625768829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99266 + ... + 164636.

It is an arithmetic number, because the mean of its divisors is an integer number (1125313608).

Almost surely, 2^8625768821 is an apocalyptic number.

It is an amenable number.

8625768821 is a deficient number, since it is larger than the sum of its proper divisors (376740043).

8625768821 is a wasteful number, since it uses less digits than its factorization.

8625768821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71131.

The product of its digits is 2580480, while the sum is 53.

The square root of 8625768821 is about 92875.0172059203. The cubic root of 8625768821 is about 2050.8438977271.

The spelling of 8625768821 in words is "eight billion, six hundred twenty-five million, seven hundred sixty-eight thousand, eight hundred twenty-one".