478637 has 2 divisors, whose sum is σ = 478638. Its totient is φ = 478636.

The previous prime is 478631. The next prime is 478651. The reversal of 478637 is 736874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 477481 + 1156 = 691^2 + 34^2 .

It is a cyclic number.

It is not a de Polignac number, because 478637 - 2⁶ = 478573 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 478597 and 478606.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 478637.

It is not a weakly prime, because it can be changed into another prime (478631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239318 + 239319.

It is an arithmetic number, because the mean of its divisors is an integer number (239319).

2⁴⁷⁸⁶³⁷ is an apocalyptic number.

It is an amenable number.

478637 is a deficient number, since it is larger than the sum of its proper divisors (1).

478637 is an equidigital number, since it uses as much as digits as its factorization.

478637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 35.

The square root of 478637 is about 691.8359632167. The cubic root of 478637 is about 78.2231719454.

The spelling of 478637 in words is "four hundred seventy-eight thousand, six hundred thirty-seven".