2066420 has 24 divisors (see below), whose sum is σ = 4366824. Its totient is φ = 821376.

The previous prime is 2066419. The next prime is 2066437. The reversal of 2066420 is 246602.

It can be written as a sum of positive squares in 4 ways, for example, as 55696 + 2010724 = 236^2 + 1418^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2066392 and 2066401.

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, 5354 + ... + 5726.

It is an arithmetic number, because the mean of its divisors is an integer number (181951).

2^2066420 is an apocalyptic number.

2066420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2066420 is an abundant number, since it is smaller than the sum of its proper divisors (2300404).

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

2066420 is a wasteful number, since it uses less digits than its factorization.

2066420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659 (or 657 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2066420 is about 1437.5047826007. The cubic root of 2066420 is about 127.3716766070.

The spelling of 2066420 in words is "two million, sixty-six thousand, four hundred twenty".