718998 has 64 divisors (see below), whose sum is σ = 1866240. Its totient is φ = 179712.

The previous prime is 718973. The next prime is 718999. The reversal of 718998 is 899817.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 718998.

It is not an unprimeable number, because it can be changed into a prime (718999) 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 31 ways as a sum of consecutive naturals, for example, 13540 + ... + 13592.

It is an arithmetic number, because the mean of its divisors is an integer number (29160).

2⁷¹⁸⁹⁹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 718998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (933120).

718998 is an abundant number, since it is smaller than the sum of its proper divisors (1147242).

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

718998 is a wasteful number, since it uses less digits than its factorization.

718998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101.

The product of its digits is 36288, while the sum is 42.

The square root of 718998 is about 847.9374976966. The cubic root of 718998 is about 89.5864981515.

The spelling of 718998 in words is "seven hundred eighteen thousand, nine hundred ninety-eight".