6776220 has 48 divisors (see below), whose sum is σ = 20700288. Its totient is φ = 1642560.

The previous prime is 6776207. The next prime is 6776233. The reversal of 6776220 is 226776.

It is an interprime number because it is at equal distance from previous prime (6776207) and next prime (6776233).

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4474 + ... + 5793.

It is an arithmetic number, because the mean of its divisors is an integer number (431256).

Almost surely, 2^6776220 is an apocalyptic number.

6776220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6776220 is an abundant number, since it is smaller than the sum of its proper divisors (13924068).

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

6776220 is a wasteful number, since it uses less digits than its factorization.

6776220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10290 (or 10288 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 6776220 is about 2603.1173619336. The cubic root of 6776220 is about 189.2325459851.

It can be divided in two parts, 6776 and 220, that added together give a palindrome (6996).

The spelling of 6776220 in words is "six million, seven hundred seventy-six thousand, two hundred twenty".