8647144532 has 12 divisors (see below), whose sum is σ = 16296541716. Its totient is φ = 3990989760.

The previous prime is 8647144531. The next prime is 8647144543. The reversal of 8647144532 is 2354417468.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3560031556 + 5087112976 = 59666^2 + 71324^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8647144531) 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, 83145569 + ... + 83145672.

It is an arithmetic number, because the mean of its divisors is an integer number (1358045143).

Almost surely, 2^8647144532 is an apocalyptic number.

It is an amenable number.

8647144532 is a deficient number, since it is larger than the sum of its proper divisors (7649397184).

8647144532 is a wasteful number, since it uses less digits than its factorization.

8647144532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166291258 (or 166291256 counting only the distinct ones).

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

The square root of 8647144532 is about 92990.0238305164. The cubic root of 8647144532 is about 2052.5365810100.

The spelling of 8647144532 in words is "eight billion, six hundred forty-seven million, one hundred forty-four thousand, five hundred thirty-two".