6138641 has 4 divisors (see below), whose sum is σ = 6153252. Its totient is φ = 6124032.

The previous prime is 6138611. The next prime is 6138647. The reversal of 6138641 is 1468316.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3900625 + 2238016 = 1975^2 + 1496^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6138641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6138647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6656 + ... + 7521.

It is an arithmetic number, because the mean of its divisors is an integer number (1538313).

Almost surely, 2^6138641 is an apocalyptic number.

It is an amenable number.

6138641 is a deficient number, since it is larger than the sum of its proper divisors (14611).

6138641 is a wasteful number, since it uses less digits than its factorization.

6138641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14610.

The product of its digits is 3456, while the sum is 29.

The square root of 6138641 is about 2477.6280996146. The cubic root of 6138641 is about 183.1010122454.

The spelling of 6138641 in words is "six million, one hundred thirty-eight thousand, six hundred forty-one".