6778726 has 8 divisors (see below), whose sum is σ = 10246104. Its totient is φ = 3363360.

The previous prime is 6778703. The next prime is 6778727. The reversal of 6778726 is 6278776.

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

It is a super-2 number, since 2×6778726² = 91902252366152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6778727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12675 + ... + 13198.

It is an arithmetic number, because the mean of its divisors is an integer number (1280763).

Almost surely, 2^6778726 is an apocalyptic number.

6778726 is a deficient number, since it is larger than the sum of its proper divisors (3467378).

6778726 is a wasteful number, since it uses less digits than its factorization.

6778726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26006.

The product of its digits is 197568, while the sum is 43.

The square root of 6778726 is about 2603.5986633888. The cubic root of 6778726 is about 189.2558706073.

The spelling of 6778726 in words is "six million, seven hundred seventy-eight thousand, seven hundred twenty-six".