638802 has 24 divisors (see below), whose sum is σ = 1445184. Its totient is φ = 203544.

The previous prime is 638801. The next prime is 638819. The reversal of 638802 is 208836.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 638802.

It is not an unprimeable number, because it can be changed into a prime (638801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 358 + ... + 1185.

It is an arithmetic number, because the mean of its divisors is an integer number (60216).

2⁶³⁸⁸⁰² is an apocalyptic number.

638802 is an abundant number, since it is smaller than the sum of its proper divisors (806382).

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

638802 is a wasteful number, since it uses less digits than its factorization.

638802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574 (or 1571 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 638802 is about 799.2508992801. The cubic root of 638802 is about 86.1235829163.

The spelling of 638802 in words is "six hundred thirty-eight thousand, eight hundred two".