66155230 has 8 divisors (see below), whose sum is σ = 119079432. Its totient is φ = 26462088.

The previous prime is 66155191. The next prime is 66155237. The reversal of 66155230 is 3255166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66155237) 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 in 3 ways as a sum of consecutive naturals, for example, 3307752 + ... + 3307771.

It is an arithmetic number, because the mean of its divisors is an integer number (14884929).

Almost surely, 2^66155230 is an apocalyptic number.

66155230 is a deficient number, since it is larger than the sum of its proper divisors (52924202).

66155230 is a wasteful number, since it uses less digits than its factorization.

66155230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6615530.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 66155230 is about 8133.5865397744. The cubic root of 66155230 is about 404.4405831310.

The spelling of 66155230 in words is "sixty-six million, one hundred fifty-five thousand, two hundred thirty".