4066688 has 16 divisors (see below), whose sum is σ = 8101860. Its totient is φ = 2033280.

The previous prime is 4066679. The next prime is 4066691. The reversal of 4066688 is 8866604.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15758 + ... + 16013.

Almost surely, 2^4066688 is an apocalyptic number.

It is an amenable number.

4066688 is a deficient number, since it is larger than the sum of its proper divisors (4035172).

4066688 is an equidigital number, since it uses as much as digits as its factorization.

4066688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31785 (or 31773 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 4066688 is about 2016.6030843971. The cubic root of 4066688 is about 159.6174192623.

The spelling of 4066688 in words is "four million, sixty-six thousand, six hundred eighty-eight".