638476 has 24 divisors (see below), whose sum is σ = 1218560. Its totient is φ = 291600.

The previous prime is 638467. The next prime is 638489. The reversal of 638476 is 674836.

638476 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2221 + ... + 2491.

2⁶³⁸⁴⁷⁶ is an apocalyptic number.

It is an amenable number.

638476 is a deficient number, since it is larger than the sum of its proper divisors (580084).

638476 is a wasteful number, since it uses less digits than its factorization.

638476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325 (or 323 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 638476 is about 799.0469322887. The cubic root of 638476 is about 86.1089299328.

The spelling of 638476 in words is "six hundred thirty-eight thousand, four hundred seventy-six".