475871647 has 2 divisors, whose sum is σ = 475871648. Its totient is φ = 475871646.

The previous prime is 475871629. The next prime is 475871657. The reversal of 475871647 is 746178574.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 475871647 - 2¹¹ = 475869599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 475871647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (475871657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237935823 + 237935824.

It is an arithmetic number, because the mean of its divisors is an integer number (237935824).

Almost surely, 2^475871647 is an apocalyptic number.

475871647 is a deficient number, since it is larger than the sum of its proper divisors (1).

475871647 is an equidigital number, since it uses as much as digits as its factorization.

475871647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1317120, while the sum is 49.

The square root of 475871647 is about 21814.4825058950. The cubic root of 475871647 is about 780.7223458523.

The spelling of 475871647 in words is "four hundred seventy-five million, eight hundred seventy-one thousand, six hundred forty-seven".