6138868 has 18 divisors (see below), whose sum is σ = 11107698. Its totient is φ = 2968560.

The previous prime is 6138863. The next prime is 6138871. The reversal of 6138868 is 8688316.

It can be written as a sum of positive squares in only one way, i.e., 4443664 + 1695204 = 2108^2 + 1302^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6138868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6138863) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3046 + ... + 4642.

Almost surely, 2^6138868 is an apocalyptic number.

It is an amenable number.

6138868 is a deficient number, since it is larger than the sum of its proper divisors (4968830).

6138868 is a wasteful number, since it uses less digits than its factorization.

6138868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1663 (or 1630 counting only the distinct ones).

The product of its digits is 55296, while the sum is 40.

The square root of 6138868 is about 2477.6739091333. The cubic root of 6138868 is about 183.1032691737.

The spelling of 6138868 in words is "six million, one hundred thirty-eight thousand, eight hundred sixty-eight".