201999968 has 48 divisors (see below), whose sum is σ = 413449344. Its totient is φ = 97044480.

The previous prime is 201999929. The next prime is 201999971. The reversal of 201999968 is 869999102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155096 + ... + 156392.

It is an arithmetic number, because the mean of its divisors is an integer number (8613528).

Almost surely, 2^201999968 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 201999968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206724672).

201999968 is an abundant number, since it is smaller than the sum of its proper divisors (211449376).

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

201999968 is a wasteful number, since it uses less digits than its factorization.

201999968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495 (or 1487 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 53.

The square root of 201999968 is about 14212.6692777958. The cubic root of 201999968 is about 586.7463998609.

The spelling of 201999968 in words is "two hundred one million, nine hundred ninety-nine thousand, nine hundred sixty-eight".