2006772720 has 80 divisors (see below), whose sum is σ = 6270074880. Its totient is φ = 530917632.

The previous prime is 2006772709. The next prime is 2006772721. The reversal of 2006772720 is 272776002.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2006772721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2440 + ... + 63399.

It is an arithmetic number, because the mean of its divisors is an integer number (78375936).

Almost surely, 2^2006772720 is an apocalyptic number.

2006772720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2006772720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3135037440).

2006772720 is an abundant number, since it is smaller than the sum of its proper divisors (4263302160).

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

2006772720 is a wasteful number, since it uses less digits than its factorization.

2006772720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65982 (or 65976 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 33.

The square root of 2006772720 is about 44797.0168649655. The cubic root of 2006772720 is about 1261.3416296502.

The spelling of 2006772720 in words is "two billion, six million, seven hundred seventy-two thousand, seven hundred twenty".