998261712 has 160 divisors (see below), whose sum is σ = 3342048000. Its totient is φ = 285175296.

The previous prime is 998261711. The next prime is 998261713. The reversal of 998261712 is 217162899.

It is an interprime number because it is at equal distance from previous prime (998261711) and next prime (998261713).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998261711) 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, 144808 + ... + 151544.

It is an arithmetic number, because the mean of its divisors is an integer number (20887800).

Almost surely, 2^998261712 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 998261712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1671024000).

998261712 is an abundant number, since it is smaller than the sum of its proper divisors (2343786288).

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

998261712 is a wasteful number, since it uses less digits than its factorization.

998261712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6775 (or 6749 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 998261712 is about 31595.2799006434. The cubic root of 998261712 is about 999.4202346037.

The spelling of 998261712 in words is "nine hundred ninety-eight million, two hundred sixty-one thousand, seven hundred twelve".