66114247 has 2 divisors, whose sum is σ = 66114248. Its totient is φ = 66114246.

The previous prime is 66114239. The next prime is 66114283. The reversal of 66114247 is 74241166.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66114247 - 2³ = 66114239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66114047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33057123 + 33057124.

It is an arithmetic number, because the mean of its divisors is an integer number (33057124).

Almost surely, 2^66114247 is an apocalyptic number.

66114247 is a deficient number, since it is larger than the sum of its proper divisors (1).

66114247 is an equidigital number, since it uses as much as digits as its factorization.

66114247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 31.

The square root of 66114247 is about 8131.0667811795. The cubic root of 66114247 is about 404.3570492347.

The spelling of 66114247 in words is "sixty-six million, one hundred fourteen thousand, two hundred forty-seven".