8897644 has 12 divisors (see below), whose sum is σ = 17795344. Its totient is φ = 3813264.

The previous prime is 8897641. The next prime is 8897653. The reversal of 8897644 is 4467988.

It is a happy number.

8897644 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 8897594 and 8897603.

It is not an unprimeable number, because it can be changed into a prime (8897641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158859 + ... + 158914.

Almost surely, 2^8897644 is an apocalyptic number.

It is an amenable number.

8897644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8897644 is a wasteful number, since it uses less digits than its factorization.

8897644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317784 (or 317782 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The square root of 8897644 is about 2982.8918854025. The cubic root of 8897644 is about 207.2168218281.

The spelling of 8897644 in words is "eight million, eight hundred ninety-seven thousand, six hundred forty-four".