638360 has 16 divisors (see below), whose sum is σ = 1436400. Its totient is φ = 255328.

The previous prime is 638359. The next prime is 638371. The reversal of 638360 is 63836.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7940 + ... + 8019.

It is an arithmetic number, because the mean of its divisors is an integer number (89775).

2⁶³⁸³⁶⁰ is an apocalyptic number.

It is an amenable number.

638360 is an abundant number, since it is smaller than the sum of its proper divisors (798040).

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

638360 is a wasteful number, since it uses less digits than its factorization.

638360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15970 (or 15966 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 638360 is about 798.9743425167. The cubic root of 638360 is about 86.1037147846.

The spelling of 638360 in words is "six hundred thirty-eight thousand, three hundred sixty".