665470616471 has 2 divisors, whose sum is σ = 665470616472. Its totient is φ = 665470616470.

The previous prime is 665470616441. The next prime is 665470616537. The reversal of 665470616471 is 174616074566.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 665470616471 - 2⁶ = 665470616407 is a prime.

It is a super-3 number, since 3×665470616471³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (665470616401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332735308235 + 332735308236.

It is an arithmetic number, because the mean of its divisors is an integer number (332735308236).

Almost surely, 2^665470616471 is an apocalyptic number.

665470616471 is a deficient number, since it is larger than the sum of its proper divisors (1).

665470616471 is an equidigital number, since it uses as much as digits as its factorization.

665470616471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5080320, while the sum is 53.

The spelling of 665470616471 in words is "six hundred sixty-five billion, four hundred seventy million, six hundred sixteen thousand, four hundred seventy-one".