6778145 has 8 divisors (see below), whose sum is σ = 8873280. Its totient is φ = 4929520.

The previous prime is 6778127. The next prime is 6778147. The reversal of 6778145 is 5418776.

6778145 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 6778145 - 2¹⁸ = 6516001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6778099 and 6778108.

It is not an unprimeable number, because it can be changed into a prime (6778147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61565 + ... + 61674.

It is an arithmetic number, because the mean of its divisors is an integer number (1109160).

Almost surely, 2^6778145 is an apocalyptic number.

It is an amenable number.

6778145 is a deficient number, since it is larger than the sum of its proper divisors (2095135).

6778145 is a wasteful number, since it uses less digits than its factorization.

6778145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123255.

The product of its digits is 47040, while the sum is 38.

The square root of 6778145 is about 2603.4870846616. The cubic root of 6778145 is about 189.2504634555.

The spelling of 6778145 in words is "six million, seven hundred seventy-eight thousand, one hundred forty-five".