66130847 has 2 divisors, whose sum is σ = 66130848. Its totient is φ = 66130846.

The previous prime is 66130789. The next prime is 66130853. The reversal of 66130847 is 74803166.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66130847 - 2¹⁴ = 66114463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66130147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33065423 + 33065424.

It is an arithmetic number, because the mean of its divisors is an integer number (33065424).

Almost surely, 2^66130847 is an apocalyptic number.

66130847 is a deficient number, since it is larger than the sum of its proper divisors (1).

66130847 is an equidigital number, since it uses as much as digits as its factorization.

66130847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 66130847 is about 8132.0874933808. The cubic root of 66130847 is about 404.3908884631.

The spelling of 66130847 in words is "sixty-six million, one hundred thirty thousand, eight hundred forty-seven".