6218778 has 16 divisors (see below), whose sum is σ = 12462336. Its totient is φ = 2068800.

The previous prime is 6218759. The next prime is 6218827. The reversal of 6218778 is 8778126.

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, 4578 + ... + 5778.

It is an arithmetic number, because the mean of its divisors is an integer number (778896).

Almost surely, 2^6218778 is an apocalyptic number.

6218778 is an abundant number, since it is smaller than the sum of its proper divisors (6243558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6218778 is a wasteful number, since it uses less digits than its factorization.

6218778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2069.

The product of its digits is 37632, while the sum is 39.

The square root of 6218778 is about 2493.7477819539. The cubic root of 6218778 is about 183.8943352047.

It can be divided in two parts, 6218 and 778, that added together give a palindrome (6996).

The spelling of 6218778 in words is "six million, two hundred eighteen thousand, seven hundred seventy-eight".