217450463 has 2 divisors, whose sum is σ = 217450464. Its totient is φ = 217450462.

The previous prime is 217450427. The next prime is 217450477. The reversal of 217450463 is 364054712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 217450463 - 2¹⁰ = 217449439 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (217450403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108725231 + 108725232.

It is an arithmetic number, because the mean of its divisors is an integer number (108725232).

Almost surely, 2^217450463 is an apocalyptic number.

217450463 is a deficient number, since it is larger than the sum of its proper divisors (1).

217450463 is an equidigital number, since it uses as much as digits as its factorization.

217450463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 217450463 is about 14746.2016465258. The cubic root of 217450463 is about 601.3400262842.

The spelling of 217450463 in words is "two hundred seventeen million, four hundred fifty thousand, four hundred sixty-three".