6667749 has 24 divisors (see below), whose sum is σ = 10737792. Its totient is φ = 3952320.

The previous prime is 6667741. The next prime is 6667753. The reversal of 6667749 is 9477666.

6667749 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6667749 - 2³ = 6667741 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6667741) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3937 + ... + 5369.

It is an arithmetic number, because the mean of its divisors is an integer number (447408).

Almost surely, 2^6667749 is an apocalyptic number.

It is an amenable number.

6667749 is a deficient number, since it is larger than the sum of its proper divisors (4070043).

6667749 is a wasteful number, since it uses less digits than its factorization.

6667749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1497 (or 1494 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 6667749 is about 2582.1984819142. The cubic root of 6667749 is about 188.2173903717.

The spelling of 6667749 in words is "six million, six hundred sixty-seven thousand, seven hundred forty-nine".