66714253 has 2 divisors, whose sum is σ = 66714254. Its totient is φ = 66714252.

The previous prime is 66714251. The next prime is 66714269. The reversal of 66714253 is 35241766.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63952009 + 2762244 = 7997^2 + 1662^2 .

It is a cyclic number.

It is not a de Polignac number, because 66714253 - 2¹ = 66714251 is a prime.

Together with 66714251, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66714251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33357126 + 33357127.

It is an arithmetic number, because the mean of its divisors is an integer number (33357127).

Almost surely, 2^66714253 is an apocalyptic number.

It is an amenable number.

66714253 is a deficient number, since it is larger than the sum of its proper divisors (1).

66714253 is an equidigital number, since it uses as much as digits as its factorization.

66714253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 34.

The square root of 66714253 is about 8167.8793453381. The cubic root of 66714253 is about 405.5765866563.

The spelling of 66714253 in words is "sixty-six million, seven hundred fourteen thousand, two hundred fifty-three".