2066071720 has 32 divisors (see below), whose sum is σ = 4657840200. Its totient is φ = 824796928.

The previous prime is 2066071691. The next prime is 2066071759. The reversal of 2066071720 is 271706602.

It can be written as a sum of positive squares in 4 ways, for example, as 1841611396 + 224460324 = 42914^2 + 14982^2 .

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, 30379 + ... + 71098.

Almost surely, 2^2066071720 is an apocalyptic number.

2066071720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2066071720 is an abundant number, since it is smaller than the sum of its proper divisors (2591768480).

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

2066071720 is a wasteful number, since it uses less digits than its factorization.

2066071720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101997 (or 101993 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 2066071720 is about 45454.0616446979. The cubic root of 2066071720 is about 1273.6452034962.

The spelling of 2066071720 in words is "two billion, sixty-six million, seventy-one thousand, seven hundred twenty".