427617247 has 2 divisors, whose sum is σ = 427617248. Its totient is φ = 427617246.

The previous prime is 427617187. The next prime is 427617257. The reversal of 427617247 is 742716724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 427617247 - 2¹⁹ = 427092959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427617257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213808623 + 213808624.

It is an arithmetic number, because the mean of its divisors is an integer number (213808624).

Almost surely, 2^427617247 is an apocalyptic number.

427617247 is a deficient number, since it is larger than the sum of its proper divisors (1).

427617247 is an equidigital number, since it uses as much as digits as its factorization.

427617247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131712, while the sum is 40.

The square root of 427617247 is about 20678.9082642194. The cubic root of 427617247 is about 753.3874898850.

The spelling of 427617247 in words is "four hundred twenty-seven million, six hundred seventeen thousand, two hundred forty-seven".