66830156 has 6 divisors (see below), whose sum is σ = 116952780. Its totient is φ = 33415076.

The previous prime is 66830149. The next prime is 66830161. The reversal of 66830156 is 65103866.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8353766 + ... + 8353773.

It is an arithmetic number, because the mean of its divisors is an integer number (19492130).

Almost surely, 2^66830156 is an apocalyptic number.

It is an amenable number.

66830156 is a deficient number, since it is larger than the sum of its proper divisors (50122624).

66830156 is a wasteful number, since it uses less digits than its factorization.

66830156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16707543 (or 16707541 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 66830156 is about 8174.9713149344. The cubic root of 66830156 is about 405.8113208404.

The spelling of 66830156 in words is "sixty-six million, eight hundred thirty thousand, one hundred fifty-six".