6778955 has 8 divisors (see below), whose sum is σ = 8354832. Its totient is φ = 5276448.

The previous prime is 6778949. The next prime is 6778963. The reversal of 6778955 is 5598776.

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 6778955 - 2⁴ = 6778939 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18137 + ... + 18506.

It is an arithmetic number, because the mean of its divisors is an integer number (1044354).

Almost surely, 2^6778955 is an apocalyptic number.

6778955 is a deficient number, since it is larger than the sum of its proper divisors (1575877).

6778955 is a wasteful number, since it uses less digits than its factorization.

6778955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36685.

The product of its digits is 529200, while the sum is 47.

The square root of 6778955 is about 2603.6426406095. The cubic root of 6778955 is about 189.2580017406.

The spelling of 6778955 in words is "six million, seven hundred seventy-eight thousand, nine hundred fifty-five".