2066840 has 32 divisors (see below), whose sum is σ = 4693680. Its totient is φ = 819072.

The previous prime is 2066833. The next prime is 2066879. The reversal of 2066840 is 486602.

It is a congruent number.

It is an unprimeable number.

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, 6362 + ... + 6678.

2^2066840 is an apocalyptic number.

2066840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2066840 is an abundant number, since it is smaller than the sum of its proper divisors (2626840).

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

2066840 is a wasteful number, since it uses less digits than its factorization.

2066840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491 (or 487 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 2066840 is about 1437.6508616490. The cubic root of 2066840 is about 127.3803054563.

The spelling of 2066840 in words is "two million, sixty-six thousand, eight hundred forty".