6995778 has 16 divisors (see below), whose sum is σ = 14017536. Its totient is φ = 2327600.

The previous prime is 6995777. The next prime is 6995803. The reversal of 6995778 is 8775996.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6995778.

It is not an unprimeable number, because it can be changed into a prime (6995777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5503 + ... + 6653.

It is an arithmetic number, because the mean of its divisors is an integer number (876096).

Almost surely, 2^6995778 is an apocalyptic number.

6995778 is an abundant number, since it is smaller than the sum of its proper divisors (7021758).

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

6995778 is a wasteful number, since it uses less digits than its factorization.

6995778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2169.

The product of its digits is 952560, while the sum is 51.

The square root of 6995778 is about 2644.9533077164. The cubic root of 6995778 is about 191.2546515166.

The spelling of 6995778 in words is "six million, nine hundred ninety-five thousand, seven hundred seventy-eight".