6687086778077 has 8 divisors (see below), whose sum is σ = 6698536435392. Its totient is φ = 6675639818400.

The previous prime is 6687086778037. The next prime is 6687086778133. The reversal of 6687086778077 is 7708776807866.

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 6687086778077 - 2⁶ = 6687086778013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6687086777989 and 6687086778007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6687086778037) 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, 4319177 + ... + 5659457.

It is an arithmetic number, because the mean of its divisors is an integer number (837317054424).

Almost surely, 2^{6687086778077} is an apocalyptic number.

It is an amenable number.

6687086778077 is a deficient number, since it is larger than the sum of its proper divisors (11449657315).

6687086778077 is a wasteful number, since it uses less digits than its factorization.

6687086778077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348819.

The product of its (nonzero) digits is 1858719744, while the sum is 77.

The spelling of 6687086778077 in words is "six trillion, six hundred eighty-seven billion, eighty-six million, seven hundred seventy-eight thousand, seventy-seven".