998712 has 96 divisors (see below), whose sum is σ = 3210480. Its totient is φ = 276480.

The previous prime is 998689. The next prime is 998717. The reversal of 998712 is 217899.

It is a happy number.

998712 is nontrivially palindromic in base 5.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (9072) is a multiple of the sum of its prime divisors (126).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998717) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10248 + ... + 10344.

2⁹⁹⁸⁷¹² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1605240).

998712 is an abundant number, since it is smaller than the sum of its proper divisors (2211768).

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

998712 is a wasteful number, since it uses less digits than its factorization.

998712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 126 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 998712 is about 999.3557924983. The cubic root of 998712 is about 99.9570482208.

It can be divided in two parts, 9987 and 12, that added together give a palindrome (9999).

The spelling of 998712 in words is "nine hundred ninety-eight thousand, seven hundred twelve".