475649 has 2 divisors, whose sum is σ = 475650. Its totient is φ = 475648.

The previous prime is 475639. The next prime is 475669. The reversal of 475649 is 946574.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 409600 + 66049 = 640^2 + 257^2 .

It is a cyclic number.

It is not a de Polignac number, because 475649 - 2¹² = 471553 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (475619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237824 + 237825.

It is an arithmetic number, because the mean of its divisors is an integer number (237825).

2⁴⁷⁵⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

475649 is a deficient number, since it is larger than the sum of its proper divisors (1).

475649 is an equidigital number, since it uses as much as digits as its factorization.

475649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 35.

The square root of 475649 is about 689.6731109736. The cubic root of 475649 is about 78.0600567493.

The spelling of 475649 in words is "four hundred seventy-five thousand, six hundred forty-nine".