66333830 has 16 divisors (see below), whose sum is σ = 126424800. Its totient is φ = 24972672.

The previous prime is 66333811. The next prime is 66333853. The reversal of 66333830 is 3833366.

66333830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194930 + ... + 195269.

It is an arithmetic number, because the mean of its divisors is an integer number (7901550).

Almost surely, 2^66333830 is an apocalyptic number.

66333830 is a deficient number, since it is larger than the sum of its proper divisors (60090970).

66333830 is a wasteful number, since it uses less digits than its factorization.

66333830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390223.

The product of its (nonzero) digits is 23328, while the sum is 32.

The square root of 66333830 is about 8144.5583060102. The cubic root of 66333830 is about 404.8042136540.

The spelling of 66333830 in words is "sixty-six million, three hundred thirty-three thousand, eight hundred thirty".