2016564720 has 80 divisors (see below), whose sum is σ = 6339451392. Its totient is φ = 530172160.

The previous prime is 2016564653. The next prime is 2016564731. The reversal of 2016564720 is 274656102.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42132 + ... + 76211.

Almost surely, 2^2016564720 is an apocalyptic number.

2016564720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2016564720 is an abundant number, since it is smaller than the sum of its proper divisors (4322886672).

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

2016564720 is a wasteful number, since it uses less digits than its factorization.

2016564720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118430 (or 118424 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 2016564720 is about 44906.1768579780. The cubic root of 2016564720 is about 1263.3898640281.

The spelling of 2016564720 in words is "two billion, sixteen million, five hundred sixty-four thousand, seven hundred twenty".