6749566 has 4 divisors (see below), whose sum is σ = 10124352. Its totient is φ = 3374782.

The previous prime is 6749563. The next prime is 6749569. The reversal of 6749566 is 6659476.

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

It is an interprime number because it is at equal distance from previous prime (6749563) and next prime (6749569).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6749563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1687390 + ... + 1687393.

It is an arithmetic number, because the mean of its divisors is an integer number (2531088).

Almost surely, 2^6749566 is an apocalyptic number.

6749566 is a deficient number, since it is larger than the sum of its proper divisors (3374786).

6749566 is a wasteful number, since it uses less digits than its factorization.

6749566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3374785.

The product of its digits is 272160, while the sum is 43.

The square root of 6749566 is about 2597.9926866718. The cubic root of 6749566 is about 188.9841069846.

The spelling of 6749566 in words is "six million, seven hundred forty-nine thousand, five hundred sixty-six".