475871645 has 4 divisors (see below), whose sum is σ = 571045980. Its totient is φ = 380697312.

The previous prime is 475871629. The next prime is 475871647. The reversal of 475871645 is 546178574.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 58813561 + 417058084 = 7669^2 + 20422^2 .

It is a cyclic number.

It is not a de Polignac number, because 475871645 - 2⁴ = 475871629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 475871645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (475871647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47587160 + ... + 47587169.

It is an arithmetic number, because the mean of its divisors is an integer number (142761495).

Almost surely, 2^475871645 is an apocalyptic number.

It is an amenable number.

475871645 is a deficient number, since it is larger than the sum of its proper divisors (95174335).

475871645 is an equidigital number, since it uses as much as digits as its factorization.

475871645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95174334.

The product of its digits is 940800, while the sum is 47.

The square root of 475871645 is about 21814.4824600539. The cubic root of 475871645 is about 780.7223447586.

The spelling of 475871645 in words is "four hundred seventy-five million, eight hundred seventy-one thousand, six hundred forty-five".