66883028 has 12 divisors (see below), whose sum is σ = 117104820. Its totient is φ = 33424512.

The previous prime is 66883001. The next prime is 66883031. The reversal of 66883028 is 82038866.

66883028 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 39967684 + 26915344 = 6322^2 + 5188^2 .

66883028 is strictly pandigital in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9650 + ... + 15062.

It is an arithmetic number, because the mean of its divisors is an integer number (9758735).

Almost surely, 2^66883028 is an apocalyptic number.

It is an amenable number.

66883028 is a deficient number, since it is larger than the sum of its proper divisors (50221792).

66883028 is a wasteful number, since it uses less digits than its factorization.

66883028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8506 (or 8504 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 66883028 is about 8178.2044484104. The cubic root of 66883028 is about 405.9183104674.

The spelling of 66883028 in words is "sixty-six million, eight hundred eighty-three thousand, twenty-eight".