2065720 has 32 divisors (see below), whose sum is σ = 4759920. Its totient is φ = 806400.

The previous prime is 2065717. The next prime is 2065727. The reversal of 2065720 is 275602.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2065691 and 2065700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2065727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1120 + ... + 2320.

2^2065720 is an apocalyptic number.

2065720 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 2065720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2379960).

2065720 is an abundant number, since it is smaller than the sum of its proper divisors (2694200).

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

2065720 is a wasteful number, since it uses less digits than its factorization.

2065720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1255 (or 1251 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 2065720 is about 1437.2612845269. The cubic root of 2065720 is about 127.3572925929.

The spelling of 2065720 in words is "two million, sixty-five thousand, seven hundred twenty".