6748826778 has 48 divisors (see below), whose sum is σ = 14934759840. Its totient is φ = 2202062112.

The previous prime is 6748826717. The next prime is 6748826779. The reversal of 6748826778 is 8776288476.

6748826778 is a `hidden beast` number, since 67 + 488 + 26 + 7 + 78 = 666.

It is a super-2 number, since 2×6748826778² = 91093325758899722568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6748826779) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 142125 + ... + 183567.

It is an arithmetic number, because the mean of its divisors is an integer number (311140830).

Almost surely, 2^6748826778 is an apocalyptic number.

6748826778 is an abundant number, since it is smaller than the sum of its proper divisors (8185933062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6748826778 is a wasteful number, since it uses less digits than its factorization.

6748826778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41643 (or 41640 counting only the distinct ones).

The product of its digits is 50577408, while the sum is 63.

The square root of 6748826778 is about 82151.2433137807. The cubic root of 6748826778 is about 1889.7720746391.

It can be divided in two parts, 6748826 and 778, that added together give a square (6749604 = 2598²).

The spelling of 6748826778 in words is "six billion, seven hundred forty-eight million, eight hundred twenty-six thousand, seven hundred seventy-eight".