638076 has 12 divisors (see below), whose sum is σ = 1488872. Its totient is φ = 212688.

The previous prime is 638063. The next prime is 638081. The reversal of 638076 is 670836.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

638076 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26575 + ... + 26598.

2⁶³⁸⁰⁷⁶ is an apocalyptic number.

It is an amenable number.

638076 is an abundant number, since it is smaller than the sum of its proper divisors (850796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

638076 is a wasteful number, since it uses less digits than its factorization.

638076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53180 (or 53178 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 638076 is about 798.7965948851. The cubic root of 638076 is about 86.0909439958.

The spelling of 638076 in words is "six hundred thirty-eight thousand, seventy-six".