6778577477 has 8 divisors (see below), whose sum is σ = 7748155392. Its totient is φ = 5809302000.

The previous prime is 6778577423. The next prime is 6778577497. The reversal of 6778577477 is 7747758776.

6778577477 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6778577477 - 2⁶ = 6778577413 is a prime.

It is a super-2 number, since 2×6778577477² = 91898225223383371058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6778577417) 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, 25349 + ... + 119162.

It is an arithmetic number, because the mean of its divisors is an integer number (968519424).

Almost surely, 2^6778577477 is an apocalyptic number.

It is an amenable number.

6778577477 is a deficient number, since it is larger than the sum of its proper divisors (969577915).

6778577477 is a wasteful number, since it uses less digits than its factorization.

6778577477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151219.

The product of its digits is 112943040, while the sum is 65.

The square root of 6778577477 is about 82332.1169228631. The cubic root of 6778577477 is about 1892.5448838813.

The spelling of 6778577477 in words is "six billion, seven hundred seventy-eight million, five hundred seventy-seven thousand, four hundred seventy-seven".