8488646521 has 8 divisors (see below), whose sum is σ = 8815534920. Its totient is φ = 8164036608.

The previous prime is 8488646513. The next prime is 8488646527. The reversal of 8488646521 is 1256468848.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6603350121 + 1885296400 = 81261^2 + 43420^2 .

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 8488646521 - 2³ = 8488646513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8488646527) 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, 562026 + ... + 576931.

It is an arithmetic number, because the mean of its divisors is an integer number (1101941865).

Almost surely, 2^8488646521 is an apocalyptic number.

It is an amenable number.

8488646521 is a deficient number, since it is larger than the sum of its proper divisors (326888399).

8488646521 is a wasteful number, since it uses less digits than its factorization.

8488646521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139243.

The product of its digits is 2949120, while the sum is 52.

The square root of 8488646521 is about 92133.8511134751. The cubic root of 8488646521 is about 2039.9184993231.

The spelling of 8488646521 in words is "eight billion, four hundred eighty-eight million, six hundred forty-six thousand, five hundred twenty-one".