66543214 has 8 divisors (see below), whose sum is σ = 100698480. Its totient is φ = 32977056.

The previous prime is 66543203. The next prime is 66543221. The reversal of 66543214 is 41234566.

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

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 146994 + ... + 147445.

It is an arithmetic number, because the mean of its divisors is an integer number (12587310).

Almost surely, 2^66543214 is an apocalyptic number.

66543214 is a deficient number, since it is larger than the sum of its proper divisors (34155266).

66543214 is a wasteful number, since it uses less digits than its factorization.

66543214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294554.

The product of its digits is 17280, while the sum is 31.

The square root of 66543214 is about 8157.4024051778. The cubic root of 66543214 is about 405.2296903670.

The spelling of 66543214 in words is "sixty-six million, five hundred forty-three thousand, two hundred fourteen".