66214347 has 8 divisors (see below), whose sum is σ = 88359744. Its totient is φ = 44105928.

The previous prime is 66214333. The next prime is 66214361. The reversal of 66214347 is 74341266.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (66214333) and next prime (66214361).

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

It is not a de Polignac number, because 66214347 - 2⁸ = 66214091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66214307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4753 + ... + 12450.

It is an arithmetic number, because the mean of its divisors is an integer number (11044968).

Almost surely, 2^66214347 is an apocalyptic number.

66214347 is a deficient number, since it is larger than the sum of its proper divisors (22145397).

66214347 is a wasteful number, since it uses less digits than its factorization.

66214347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18489.

The product of its digits is 24192, while the sum is 33.

The square root of 66214347 is about 8137.2198569290. The cubic root of 66214347 is about 404.5610180314.

The spelling of 66214347 in words is "sixty-six million, two hundred fourteen thousand, three hundred forty-seven".