8647998 has 16 divisors (see below), whose sum is σ = 17329680. Its totient is φ = 2877056.

The previous prime is 8647997. The next prime is 8648033. The reversal of 8647998 is 8997468.

It is a happy number.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 8647998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8647993) 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, 2998 + ... + 5126.

It is an arithmetic number, because the mean of its divisors is an integer number (1083105).

Almost surely, 2^8647998 is an apocalyptic number.

8647998 is an abundant number, since it is smaller than the sum of its proper divisors (8681682).

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

8647998 is a wasteful number, since it uses less digits than its factorization.

8647998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2811.

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

The square root of 8647998 is about 2940.7478640645. The cubic root of 8647998 is about 205.2604106833.

It can be divided in two parts, 86 and 47998, that added together give a palindrome (48084).

The spelling of 8647998 in words is "eight million, six hundred forty-seven thousand, nine hundred ninety-eight".