6778707 has 16 divisors (see below), whose sum is σ = 9871008. Its totient is φ = 4112640.

The previous prime is 6778703. The next prime is 6778727. The reversal of 6778707 is 7078776.

6778707 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6778707 - 2² = 6778703 is a prime.

6778707 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6778703) 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, 1657 + ... + 4037.

It is an arithmetic number, because the mean of its divisors is an integer number (616938).

Almost surely, 2^6778707 is an apocalyptic number.

6778707 is a deficient number, since it is larger than the sum of its proper divisors (3092301).

6778707 is a wasteful number, since it uses less digits than its factorization.

6778707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2470.

The product of its (nonzero) digits is 115248, while the sum is 42.

The square root of 6778707 is about 2603.5950145904. The cubic root of 6778707 is about 189.2556937862.

The spelling of 6778707 in words is "six million, seven hundred seventy-eight thousand, seven hundred seven".