638016 has 28 divisors (see below), whose sum is σ = 1688592. Its totient is φ = 212608.

The previous prime is 637939. The next prime is 638023. The reversal of 638016 is 610836.

638016 is nontrivially palindromic in base 5.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1470 + ... + 1853.

2⁶³⁸⁰¹⁶ is an apocalyptic number.

It is an amenable number.

638016 is an abundant number, since it is smaller than the sum of its proper divisors (1050576).

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

638016 is a wasteful number, since it uses less digits than its factorization.

638016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3338 (or 3328 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 638016 is about 798.7590375076. The cubic root of 638016 is about 86.0882454570.

The spelling of 638016 in words is "six hundred thirty-eight thousand, sixteen".