6749605 has 8 divisors (see below), whose sum is σ = 8379000. Its totient is φ = 5213376.

The previous prime is 6749593. The next prime is 6749621. The reversal of 6749605 is 5069476.

It is a Cunningham number, because it is equal to 2598²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 2427364 + 4322241 = 1558^2 + 2079^2 .

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 6749605 - 2¹¹ = 6747557 is a prime.

It is a d-powerful number, because it can be written as 6⁴ + 7³ + 4⁶ + 9⁷ + 6⁵ + 0 + 5⁹ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23130 + ... + 23419.

It is an arithmetic number, because the mean of its divisors is an integer number (1047375).

Almost surely, 2^6749605 is an apocalyptic number.

It is an amenable number.

6749605 is a deficient number, since it is larger than the sum of its proper divisors (1629395).

6749605 is a wasteful number, since it uses less digits than its factorization.

6749605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46583.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 6749605 is about 2598.0001924557. Note that the first 3 decimals coincide. The cubic root of 6749605 is about 188.9844709767.

The spelling of 6749605 in words is "six million, seven hundred forty-nine thousand, six hundred five".