66641714 has 8 divisors (see below), whose sum is σ = 101228160. Its totient is φ = 32898996.

The previous prime is 66641713. The next prime is 66641737. The reversal of 66641714 is 41714666.

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

It is a super-2 number, since 2×66641714² = 8882236089715592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66641711) 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, 210734 + ... + 211049.

It is an arithmetic number, because the mean of its divisors is an integer number (12653520).

Almost surely, 2^66641714 is an apocalyptic number.

66641714 is a deficient number, since it is larger than the sum of its proper divisors (34586446).

66641714 is a wasteful number, since it uses less digits than its factorization.

66641714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421864.

The product of its digits is 24192, while the sum is 35.

The square root of 66641714 is about 8163.4376337423. The cubic root of 66641714 is about 405.4295376723.

The spelling of 66641714 in words is "sixty-six million, six hundred forty-one thousand, seven hundred fourteen".