6641078 has 4 divisors (see below), whose sum is σ = 9961620. Its totient is φ = 3320538.

The previous prime is 6641077. The next prime is 6641083. The reversal of 6641078 is 8701466.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8701466 = 2 ⋅4350733.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6641077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1660268 + ... + 1660271.

It is an arithmetic number, because the mean of its divisors is an integer number (2490405).

Almost surely, 2^6641078 is an apocalyptic number.

6641078 is a deficient number, since it is larger than the sum of its proper divisors (3320542).

6641078 is a wasteful number, since it uses less digits than its factorization.

6641078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3320541.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 6641078 is about 2577.0289094226. The cubic root of 6641078 is about 187.9660984592.

The spelling of 6641078 in words is "six million, six hundred forty-one thousand, seventy-eight".