6749663 has 8 divisors (see below), whose sum is σ = 7393680. Its totient is φ = 6133120.

The previous prime is 6749657. The next prime is 6749689. The reversal of 6749663 is 3669476.

It is a happy number.

6749663 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 6749663 - 2¹⁰ = 6748639 is a prime.

It is a super-2 number, since 2×6749663² = 91115901227138, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6749663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6749263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6353 + ... + 7338.

It is an arithmetic number, because the mean of its divisors is an integer number (924210).

Almost surely, 2^6749663 is an apocalyptic number.

6749663 is a deficient number, since it is larger than the sum of its proper divisors (644017).

6749663 is a wasteful number, since it uses less digits than its factorization.

6749663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13737.

The product of its digits is 163296, while the sum is 41.

The square root of 6749663 is about 2598.0113548636. The cubic root of 6749663 is about 188.9850122956.

The spelling of 6749663 in words is "six million, seven hundred forty-nine thousand, six hundred sixty-three".