66028828 has 6 divisors (see below), whose sum is σ = 115550456. Its totient is φ = 33014412.

The previous prime is 66028801. The next prime is 66028829. The reversal of 66028828 is 82882066.

It is a super-2 number, since 2×66028828² = 8719612254107168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66028829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8253600 + ... + 8253607.

Almost surely, 2^66028828 is an apocalyptic number.

It is an amenable number.

66028828 is a deficient number, since it is larger than the sum of its proper divisors (49521628).

66028828 is a wasteful number, since it uses less digits than its factorization.

66028828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16507211 (or 16507209 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 66028828 is about 8125.8124516875. The cubic root of 66028828 is about 404.1828323195.

The spelling of 66028828 in words is "sixty-six million, twenty-eight thousand, eight hundred twenty-eight".