66514814 has 8 divisors (see below), whose sum is σ = 100093968. Its totient is φ = 33150160.

The previous prime is 66514813. The next prime is 66514817. The reversal of 66514814 is 41841566.

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 (66514813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52847 + ... + 54090.

It is an arithmetic number, because the mean of its divisors is an integer number (12511746).

Almost surely, 2^66514814 is an apocalyptic number.

66514814 is a deficient number, since it is larger than the sum of its proper divisors (33579154).

66514814 is a wasteful number, since it uses less digits than its factorization.

66514814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107250.

The product of its digits is 23040, while the sum is 35.

The square root of 66514814 is about 8155.6614691881. The cubic root of 66514814 is about 405.1720327931.

The spelling of 66514814 in words is "sixty-six million, five hundred fourteen thousand, eight hundred fourteen".