6778617 has 4 divisors (see below), whose sum is σ = 9038160. Its totient is φ = 4519076.

The previous prime is 6778589. The next prime is 6778621. The reversal of 6778617 is 7168776.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6778617 - 2¹⁹ = 6254329 is a prime.

It is a super-3 number, since 3×6778617³ (a number of 21 digits) contains 333 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (6778637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1129767 + ... + 1129772.

It is an arithmetic number, because the mean of its divisors is an integer number (2259540).

Almost surely, 2^6778617 is an apocalyptic number.

It is an amenable number.

6778617 is a deficient number, since it is larger than the sum of its proper divisors (2259543).

6778617 is a wasteful number, since it uses less digits than its factorization.

6778617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2259542.

The product of its digits is 98784, while the sum is 42.

The square root of 6778617 is about 2603.5777307390. The cubic root of 6778617 is about 189.2548562082.

The spelling of 6778617 in words is "six million, seven hundred seventy-eight thousand, six hundred seventeen".