66714319 has 4 divisors (see below), whose sum is σ = 76244944. Its totient is φ = 57183696.

The previous prime is 66714299. The next prime is 66714331. The reversal of 66714319 is 91341766.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66714319 - 2¹³ = 66706127 is a prime.

It is a super-2 number, since 2×66714319² = 8901600719267522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66714019) 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, 4765302 + ... + 4765315.

It is an arithmetic number, because the mean of its divisors is an integer number (19061236).

Almost surely, 2^66714319 is an apocalyptic number.

66714319 is a deficient number, since it is larger than the sum of its proper divisors (9530625).

66714319 is an equidigital number, since it uses as much as digits as its factorization.

66714319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9530624.

The product of its digits is 27216, while the sum is 37.

The square root of 66714319 is about 8167.8833855534. The cubic root of 66714319 is about 405.5767204011.

The spelling of 66714319 in words is "sixty-six million, seven hundred fourteen thousand, three hundred nineteen".