6778057 has 24 divisors (see below), whose sum is σ = 8341760. Its totient is φ = 5464800.

The previous prime is 6778049. The next prime is 6778061. The reversal of 6778057 is 7508776.

It is not a de Polignac number, because 6778057 - 2³ = 6778049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6778027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48694 + ... + 48832.

Almost surely, 2^6778057 is an apocalyptic number.

It is an amenable number.

6778057 is a deficient number, since it is larger than the sum of its proper divisors (1563703).

6778057 is a wasteful number, since it uses less digits than its factorization.

6778057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 82320, while the sum is 40.

The square root of 6778057 is about 2603.4701841965. The cubic root of 6778057 is about 189.2496444451.

The spelling of 6778057 in words is "six million, seven hundred seventy-eight thousand, fifty-seven".