8997864 has 32 divisors (see below), whose sum is σ = 22770720. Its totient is φ = 2962496.

The previous prime is 8997847. The next prime is 8997869. The reversal of 8997864 is 4687998.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (8997869) 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 7 ways as a sum of consecutive naturals, for example, 267 + ... + 4250.

It is an arithmetic number, because the mean of its divisors is an integer number (711585).

Almost surely, 2^8997864 is an apocalyptic number.

It is an amenable number.

8997864 is an abundant number, since it is smaller than the sum of its proper divisors (13772856).

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

8997864 is a wasteful number, since it uses less digits than its factorization.

8997864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4609 (or 4605 counting only the distinct ones).

The product of its digits is 870912, while the sum is 51.

The square root of 8997864 is about 2999.6439788748. The cubic root of 8997864 is about 207.9919252289.

The spelling of 8997864 in words is "eight million, nine hundred ninety-seven thousand, eight hundred sixty-four".