66348047 has 2 divisors, whose sum is σ = 66348048. Its totient is φ = 66348046.

The previous prime is 66348017. The next prime is 66348049. The reversal of 66348047 is 74084366.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66348047 - 2¹⁰ = 66347023 is a prime.

Together with 66348049, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66348047.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66348049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33174023 + 33174024.

It is an arithmetic number, because the mean of its divisors is an integer number (33174024).

Almost surely, 2^66348047 is an apocalyptic number.

66348047 is a deficient number, since it is larger than the sum of its proper divisors (1).

66348047 is an equidigital number, since it uses as much as digits as its factorization.

66348047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 38.

The square root of 66348047 is about 8145.4310505952. The cubic root of 66348047 is about 404.8331314796.

The spelling of 66348047 in words is "sixty-six million, three hundred forty-eight thousand, forty-seven".