6869778 has 32 divisors (see below), whose sum is σ = 14570496. Its totient is φ = 2154768.

The previous prime is 6869777. The next prime is 6869789. The reversal of 6869778 is 8779686.

It is a happy number.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 6869778.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6869777) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8875 + ... + 9617.

It is an arithmetic number, because the mean of its divisors is an integer number (455328).

Almost surely, 2^6869778 is an apocalyptic number.

6869778 is an abundant number, since it is smaller than the sum of its proper divisors (7700718).

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

6869778 is a wasteful number, since it uses less digits than its factorization.

6869778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838.

The product of its digits is 1016064, while the sum is 51.

The square root of 6869778 is about 2621.0261349327. The cubic root of 6869778 is about 190.0994677703.

The spelling of 6869778 in words is "six million, eight hundred sixty-nine thousand, seven hundred seventy-eight".