87644409284 has 12 divisors (see below), whose sum is σ = 153580334124. Its totient is φ = 43764313824.

The previous prime is 87644409277. The next prime is 87644409289. The reversal of 87644409284 is 48290444678.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 40028805184 + 47615604100 = 200072^2 + 218210^2 .

It is not an unprimeable number, because it can be changed into a prime (87644409289) 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, 14469299 + ... + 14475354.

It is an arithmetic number, because the mean of its divisors is an integer number (12798361177).

Almost surely, 2^87644409284 is an apocalyptic number.

It is an amenable number.

87644409284 is a deficient number, since it is larger than the sum of its proper divisors (65935924840).

87644409284 is a wasteful number, since it uses less digits than its factorization.

87644409284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28945414 (or 28945412 counting only the distinct ones).

The product of its (nonzero) digits is 12386304, while the sum is 56.

The spelling of 87644409284 in words is "eighty-seven billion, six hundred forty-four million, four hundred nine thousand, two hundred eighty-four".