603989987328 has 1404 divisors, whose sum is σ = 2347815981420. Its totient is φ = 148239286272.

The previous prime is 603989987299. The next prime is 603989987329. The reversal of 603989987328 is 823789989306.

603989987328 is a `hidden beast` number, since 60 + 398 + 9 + 98 + 73 + 28 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 2608349184 + 601381638144 = 51072^2 + 775488^2 .

It is a super-3 number, since 3×603989987328³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (603989987329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 6786404308 + ... + 6786404396.

It is an arithmetic number, because the mean of its divisors is an integer number (1672233605).

Almost surely, 2^603989987328 is an apocalyptic number.

603989987328 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 603989987328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1173907990710).

603989987328 is an abundant number, since it is smaller than the sum of its proper divisors (1743825994092).

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

603989987328 is a wasteful number, since it uses less digits than its factorization.

603989987328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 282175488, while the sum is 72.

The spelling of 603989987328 in words is "six hundred three billion, nine hundred eighty-nine million, nine hundred eighty-seven thousand, three hundred twenty-eight".