471812647 has 2 divisors, whose sum is σ = 471812648. Its totient is φ = 471812646.

The previous prime is 471812633. The next prime is 471812681. The reversal of 471812647 is 746218174.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-471812647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (471812147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 235906323 + 235906324.

It is an arithmetic number, because the mean of its divisors is an integer number (235906324).

Almost surely, 2^471812647 is an apocalyptic number.

471812647 is a deficient number, since it is larger than the sum of its proper divisors (1).

471812647 is an equidigital number, since it uses as much as digits as its factorization.

471812647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75264, while the sum is 40.

The square root of 471812647 is about 21721.2487440294. The cubic root of 471812647 is about 778.4962519484.

The spelling of 471812647 in words is "four hundred seventy-one million, eight hundred twelve thousand, six hundred forty-seven".