6766345 has 4 divisors (see below), whose sum is σ = 8119620. Its totient is φ = 5413072.

The previous prime is 6766321. The next prime is 6766369. The reversal of 6766345 is 5436676.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (6766321) and next prime (6766369).

It can be written as a sum of positive squares in 2 ways, for example, as 5148361 + 1617984 = 2269^2 + 1272^2 .

It is a cyclic number.

It is not a de Polignac number, because 6766345 - 2⁵ = 6766313 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 676630 + ... + 676639.

It is an arithmetic number, because the mean of its divisors is an integer number (2029905).

Almost surely, 2^6766345 is an apocalyptic number.

It is an amenable number.

6766345 is a deficient number, since it is larger than the sum of its proper divisors (1353275).

6766345 is a wasteful number, since it uses less digits than its factorization.

6766345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353274.

The product of its digits is 90720, while the sum is 37.

The square root of 6766345 is about 2601.2199061210. The cubic root of 6766345 is about 189.1405782968.

It can be divided in two parts, 676 and 6345, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 6766345 in words is "six million, seven hundred sixty-six thousand, three hundred forty-five".