6778265 has 8 divisors (see below), whose sum is σ = 8759688. Its totient is φ = 5005440.

The previous prime is 6778249. The next prime is 6778267. The reversal of 6778265 is 5628776.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 33856 + 6744409 = 184^2 + 2597^2 .

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

It is not a de Polignac number, because 6778265 - 2⁴ = 6778249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6778267) 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, 52076 + ... + 52205.

It is an arithmetic number, because the mean of its divisors is an integer number (1094961).

Almost surely, 2^6778265 is an apocalyptic number.

6778265 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6778265 is a deficient number, since it is larger than the sum of its proper divisors (1981423).

6778265 is a wasteful number, since it uses less digits than its factorization.

6778265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104299.

The product of its digits is 141120, while the sum is 41.

The square root of 6778265 is about 2603.5101305737. The cubic root of 6778265 is about 189.2515802763.

The spelling of 6778265 in words is "six million, seven hundred seventy-eight thousand, two hundred sixty-five".