6778013 has 8 divisors (see below), whose sum is σ = 7413120. Its totient is φ = 6146080.

The previous prime is 6777989. The next prime is 6778021. The reversal of 6778013 is 3108776.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6778013 - 2⁶ = 6777949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6778033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7481 + ... + 8337.

It is an arithmetic number, because the mean of its divisors is an integer number (926640).

Almost surely, 2^6778013 is an apocalyptic number.

It is an amenable number.

6778013 is a deficient number, since it is larger than the sum of its proper divisors (635107).

6778013 is a wasteful number, since it uses less digits than its factorization.

6778013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 6778013 is about 2603.4617339227. The cubic root of 6778013 is about 189.2492349373.

The spelling of 6778013 in words is "six million, seven hundred seventy-eight thousand, thirteen".