66430828 has 6 divisors (see below), whose sum is σ = 116253956. Its totient is φ = 33215412.

The previous prime is 66430823. The next prime is 66430841. The reversal of 66430828 is 82803466.

It is not an unprimeable number, because it can be changed into a prime (66430823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8303850 + ... + 8303857.

Almost surely, 2^66430828 is an apocalyptic number.

It is an amenable number.

66430828 is a deficient number, since it is larger than the sum of its proper divisors (49823128).

66430828 is a wasteful number, since it uses less digits than its factorization.

66430828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16607711 (or 16607709 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 66430828 is about 8150.5109042317. The cubic root of 66430828 is about 405.0014286390.

The spelling of 66430828 in words is "sixty-six million, four hundred thirty thousand, eight hundred twenty-eight".