6800645 has 8 divisors (see below), whose sum is σ = 8442360. Its totient is φ = 5252800.

The previous prime is 6800641. The next prime is 6800653. The reversal of 6800645 is 5460086.

It can be written as a sum of positive squares in 4 ways, for example, as 2208196 + 4592449 = 1486^2 + 2143^2 .

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

It is not a de Polignac number, because 6800645 - 2² = 6800641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6800641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23306 + ... + 23595.

It is an arithmetic number, because the mean of its divisors is an integer number (1055295).

Almost surely, 2^6800645 is an apocalyptic number.

It is an amenable number.

6800645 is a deficient number, since it is larger than the sum of its proper divisors (1641715).

6800645 is a wasteful number, since it uses less digits than its factorization.

6800645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46935.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 6800645 is about 2607.8046322530. The cubic root of 6800645 is about 189.4596373264.

The spelling of 6800645 in words is "six million, eight hundred thousand, six hundred forty-five".