2020999968 has 72 divisors (see below), whose sum is σ = 6189323868. Its totient is φ = 621844992.

The previous prime is 2020999913. The next prime is 2020999969. The reversal of 2020999968 is 8699990202.

It can be written as a sum of positive squares in 2 ways, for example, as 1512587664 + 508412304 = 38892^2 + 22548^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (2020999969) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 266155 + ... + 273642.

Almost surely, 2^2020999968 is an apocalyptic number.

It is an amenable number.

2020999968 is an abundant number, since it is smaller than the sum of its proper divisors (4168323900).

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

2020999968 is a wasteful number, since it uses less digits than its factorization.

2020999968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539826 (or 539815 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 54.

The square root of 2020999968 is about 44955.5332300708. The cubic root of 2020999968 is about 1264.3154222701.

The spelling of 2020999968 in words is "two billion, twenty million, nine hundred ninety-nine thousand, nine hundred sixty-eight".