6757945 has 4 divisors (see below), whose sum is σ = 8109540. Its totient is φ = 5406352.

The previous prime is 6757937. The next prime is 6757951. The reversal of 6757945 is 5497576.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1098304 + 5659641 = 1048^2 + 2379^2 .

It is a cyclic number.

It is not a de Polignac number, because 6757945 - 2³ = 6757937 is a prime.

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, 675790 + ... + 675799.

It is an arithmetic number, because the mean of its divisors is an integer number (2027385).

Almost surely, 2^6757945 is an apocalyptic number.

It is an amenable number.

6757945 is a deficient number, since it is larger than the sum of its proper divisors (1351595).

6757945 is a wasteful number, since it uses less digits than its factorization.

6757945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351594.

The product of its digits is 264600, while the sum is 43.

The square root of 6757945 is about 2599.6047776537. The cubic root of 6757945 is about 189.0622770983.

The spelling of 6757945 in words is "six million, seven hundred fifty-seven thousand, nine hundred forty-five".