66014231 has 2 divisors, whose sum is σ = 66014232. Its totient is φ = 66014230.

The previous prime is 66014197. The next prime is 66014233. The reversal of 66014231 is 13241066.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66014231 - 2¹⁴ = 65997847 is a prime.

It is a super-2 number, since 2×66014231² = 8715757389042722, which contains 22 as substring.

Together with 66014233, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 66014197 and 66014206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66014233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33007115 + 33007116.

It is an arithmetic number, because the mean of its divisors is an integer number (33007116).

Almost surely, 2^66014231 is an apocalyptic number.

66014231 is a deficient number, since it is larger than the sum of its proper divisors (1).

66014231 is an equidigital number, since it uses as much as digits as its factorization.

66014231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 66014231 is about 8124.9142149317. The cubic root of 66014231 is about 404.1530458772.

Adding to 66014231 its reverse (13241066), we get a palindrome (79255297).

The spelling of 66014231 in words is "sixty-six million, fourteen thousand, two hundred thirty-one".