6568138 has 4 divisors (see below), whose sum is σ = 9852210. Its totient is φ = 3284068.

The previous prime is 6568127. The next prime is 6568141. The reversal of 6568138 is 8318656.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6436369 + 131769 = 2537^2 + 363^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6568097 and 6568106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1642033 + ... + 1642036.

Almost surely, 2^6568138 is an apocalyptic number.

6568138 is a deficient number, since it is larger than the sum of its proper divisors (3284072).

6568138 is a wasteful number, since it uses less digits than its factorization.

6568138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3284071.

The product of its digits is 34560, while the sum is 37.

The square root of 6568138 is about 2562.8378801633. The cubic root of 6568138 is about 187.2754099051.

The spelling of 6568138 in words is "six million, five hundred sixty-eight thousand, one hundred thirty-eight".