6751642 has 4 divisors (see below), whose sum is σ = 10127466. Its totient is φ = 3375820.

The previous prime is 6751573. The next prime is 6751651. The reversal of 6751642 is 2461576.

It is a happy number.

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., 4498641 + 2253001 = 2121^2 + 1501^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1687909 + ... + 1687912.

Almost surely, 2^6751642 is an apocalyptic number.

6751642 is a deficient number, since it is larger than the sum of its proper divisors (3375824).

6751642 is a wasteful number, since it uses less digits than its factorization.

6751642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3375823.

The product of its digits is 10080, while the sum is 31.

The square root of 6751642 is about 2598.3921951853. The cubic root of 6751642 is about 189.0034806149.

The spelling of 6751642 in words is "six million, seven hundred fifty-one thousand, six hundred forty-two".