320998608 has 240 divisors, whose sum is σ = 1074236800. Its totient is φ = 89413632.

The previous prime is 320998591. The next prime is 320998621. The reversal of 320998608 is 806899023.

320998608 is a `hidden beast` number, since 32 + 0 + 9 + 9 + 8 + 608 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3309216 + ... + 3309312.

Almost surely, 2^320998608 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 320998608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (537118400).

320998608 is an abundant number, since it is smaller than the sum of its proper divisors (753238192).

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

320998608 is a wasteful number, since it uses less digits than its factorization.

320998608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 320998608 is about 17916.4340201950. The cubic root of 320998608 is about 684.7011380306.

The spelling of 320998608 in words is "three hundred twenty million, nine hundred ninety-eight thousand, six hundred eight".