638600496 has 80 divisors (see below), whose sum is σ = 1726556160. Its totient is φ = 203143680.

The previous prime is 638600491. The next prime is 638600513. The reversal of 638600496 is 694006836.

It is not an unprimeable number, because it can be changed into a prime (638600491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105685 + ... + 111563.

It is an arithmetic number, because the mean of its divisors is an integer number (21581952).

Almost surely, 2^638600496 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 638600496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (863278080).

638600496 is an abundant number, since it is smaller than the sum of its proper divisors (1087955664).

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

638600496 is a wasteful number, since it uses less digits than its factorization.

638600496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5994 (or 5988 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 638600496 is about 25270.5460170531. The cubic root of 638600496 is about 861.1452634292.

The spelling of 638600496 in words is "six hundred thirty-eight million, six hundred thousand, four hundred ninety-six".