2016566280 has 80 divisors (see below), whose sum is σ = 6777914220. Its totient is φ = 537750144.

The previous prime is 2016566221. The next prime is 2016566281. The reversal of 2016566280 is 826656102.

2016566280 is a `hidden beast` number, since 2 + 0 + 16 + 566 + 2 + 80 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1981496196 + 35070084 = 44514^2 + 5922^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2016566281) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 307959 + ... + 314438.

Almost surely, 2^2016566280 is an apocalyptic number.

2016566280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2016566280 is an abundant number, since it is smaller than the sum of its proper divisors (4761347940).

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

2016566280 is a wasteful number, since it uses less digits than its factorization.

2016566280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622420 (or 622407 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 2016566280 is about 44906.1942275228. The cubic root of 2016566280 is about 1263.3901898111.

It can be divided in two parts, 201656 and 6280, that added together give a square (207936 = 456²).

The spelling of 2016566280 in words is "two billion, sixteen million, five hundred sixty-six thousand, two hundred eighty".