2066688 has 144 divisors (see below), whose sum is σ = 6867840. Its totient is φ = 608256.

The previous prime is 2066683. The next prime is 2066693. The reversal of 2066688 is 8866602.

It is an interprime number because it is at equal distance from previous prime (2066683) and next prime (2066693).

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2066681) 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, 89845 + ... + 89867.

2^2066688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2066688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3433920).

2066688 is an abundant number, since it is smaller than the sum of its proper divisors (4801152).

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

2066688 is a wasteful number, since it uses less digits than its factorization.

2066688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 2066688 is about 1437.5979966597. The cubic root of 2066688 is about 127.3771827696.

The spelling of 2066688 in words is "two million, sixty-six thousand, six hundred eighty-eight".