2066677720 has 32 divisors (see below), whose sum is σ = 4652691120. Its totient is φ = 826197120.

The previous prime is 2066677703. The next prime is 2066677751. The reversal of 2066677720 is 277766602.

It is a happy number.

It is a congruent number.

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, 60559 + ... + 88321.

Almost surely, 2^2066677720 is an apocalyptic number.

2066677720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2066677720 is an abundant number, since it is smaller than the sum of its proper divisors (2586013400).

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

2066677720 is a wasteful number, since it uses less digits than its factorization.

2066677720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29635 (or 29631 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 43.

The square root of 2066677720 is about 45460.7272269153. The cubic root of 2066677720 is about 1273.7697157184.

The spelling of 2066677720 in words is "two billion, sixty-six million, six hundred seventy-seven thousand, seven hundred twenty".