6748645 has 8 divisors (see below), whose sum is σ = 8150904. Its totient is φ = 5363904.

The previous prime is 6748639. The next prime is 6748673. The reversal of 6748645 is 5468476.

It can be written as a sum of positive squares in 4 ways, for example, as 682276 + 6066369 = 826^2 + 2463^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6748645 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6748598 and 6748607.

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, 3514 + ... + 5083.

It is an arithmetic number, because the mean of its divisors is an integer number (1018863).

Almost surely, 2^6748645 is an apocalyptic number.

It is an amenable number.

6748645 is a deficient number, since it is larger than the sum of its proper divisors (1402259).

6748645 is a wasteful number, since it uses less digits than its factorization.

6748645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8759.

The product of its digits is 161280, while the sum is 40.

The square root of 6748645 is about 2597.8154283936. The cubic root of 6748645 is about 188.9755107637.

The spelling of 6748645 in words is "six million, seven hundred forty-eight thousand, six hundred forty-five".