2066720416 has 12 divisors (see below), whose sum is σ = 4068855882. Its totient is φ = 1033360192.

The previous prime is 2066720399. The next prime is 2066720419. The reversal of 2066720416 is 6140276602.

It can be written as a sum of positive squares in only one way, i.e., 1368704016 + 698016400 = 36996^2 + 26420^2 .

It is a super-2 number, since 2×2066720416² = 8542666555822426112, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2066720419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32292475 + ... + 32292538.

Almost surely, 2^2066720416 is an apocalyptic number.

It is an amenable number.

2066720416 is a deficient number, since it is larger than the sum of its proper divisors (2002135466).

2066720416 is an equidigital number, since it uses as much as digits as its factorization.

2066720416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64585023 (or 64585015 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 2066720416 is about 45461.1968166259. The cubic root of 2066720416 is about 1273.7784873646.

The spelling of 2066720416 in words is "two billion, sixty-six million, seven hundred twenty thousand, four hundred sixteen".