998669760 has 224 divisors, whose sum is σ = 3663159552. Its totient is φ = 227819520.

The previous prime is 998669747. The next prime is 998669767. The reversal of 998669760 is 67966899.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 998669694 and 998669703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998669767) 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, 176739 + ... + 182301.

Almost surely, 2^998669760 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 998669760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1831579776).

998669760 is an abundant number, since it is smaller than the sum of its proper divisors (2664489792).

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

998669760 is a wasteful number, since it uses less digits than its factorization.

998669760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5611 (or 5601 counting only the distinct ones).

The product of its (nonzero) digits is 8817984, while the sum is 60.

The square root of 998669760 is about 31601.7366611394. The cubic root of 998669760 is about 999.5563899059.

The spelling of 998669760 in words is "nine hundred ninety-eight million, six hundred sixty-nine thousand, seven hundred sixty".