6778135 has 16 divisors (see below), whose sum is σ = 10011456. Its totient is φ = 4290048.

The previous prime is 6778127. The next prime is 6778147. The reversal of 6778135 is 5318776.

It is not a de Polignac number, because 6778135 - 2³ = 6778127 is a prime.

It is a super-2 number, since 2×6778135² = 91886228156450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6778094 and 6778103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6994 + ... + 7903.

It is an arithmetic number, because the mean of its divisors is an integer number (625716).

Almost surely, 2^6778135 is an apocalyptic number.

6778135 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6778135 is a deficient number, since it is larger than the sum of its proper divisors (3233321).

6778135 is a wasteful number, since it uses less digits than its factorization.

6778135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14922.

The product of its digits is 35280, while the sum is 37.

The square root of 6778135 is about 2603.4851641598. The cubic root of 6778135 is about 189.2503703864.

The spelling of 6778135 in words is "six million, seven hundred seventy-eight thousand, one hundred thirty-five".