6718998 has 64 divisors (see below), whose sum is σ = 16257024. Its totient is φ = 1824000.

The previous prime is 6718997. The next prime is 6719003. The reversal of 6718998 is 8998176.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6718997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35083 + ... + 35273.

It is an arithmetic number, because the mean of its divisors is an integer number (254016).

Almost surely, 2^6718998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6718998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8128512).

6718998 is an abundant number, since it is smaller than the sum of its proper divisors (9538026).

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

6718998 is a wasteful number, since it uses less digits than its factorization.

6718998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261.

The product of its digits is 217728, while the sum is 48.

The square root of 6718998 is about 2592.1030072125. The cubic root of 6718998 is about 188.6983795215.

It can be divided in two parts, 671 and 8998, that added together give a palindrome (9669).

The spelling of 6718998 in words is "six million, seven hundred eighteen thousand, nine hundred ninety-eight".