6461138 has 8 divisors (see below), whose sum is σ = 9706620. Its totient is φ = 3225600.

The previous prime is 6461131. The next prime is 6461141. The reversal of 6461138 is 8311646.

It can be written as a sum of positive squares in 2 ways, for example, as 5793649 + 667489 = 2407^2 + 817^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 6461138.

It is not an unprimeable number, because it can be changed into a prime (6461131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 563 + ... + 3638.

Almost surely, 2^6461138 is an apocalyptic number.

6461138 is a deficient number, since it is larger than the sum of its proper divisors (3245482).

6461138 is a wasteful number, since it uses less digits than its factorization.

6461138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4972.

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

The square root of 6461138 is about 2541.8768656251. The cubic root of 6461138 is about 186.2528837594.

The spelling of 6461138 in words is "six million, four hundred sixty-one thousand, one hundred thirty-eight".