6671220 has 24 divisors (see below), whose sum is σ = 18679584. Its totient is φ = 1778976.

The previous prime is 6671201. The next prime is 6671239. The reversal of 6671220 is 221766.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6671201) and next prime (6671239).

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 7 ways as a sum of consecutive naturals, for example, 55534 + ... + 55653.

It is an arithmetic number, because the mean of its divisors is an integer number (778316).

Almost surely, 2^6671220 is an apocalyptic number.

6671220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6671220 is an abundant number, since it is smaller than the sum of its proper divisors (12008364).

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

6671220 is a wasteful number, since it uses less digits than its factorization.

6671220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111199 (or 111197 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 6671220 is about 2582.8704961728. The cubic root of 6671220 is about 188.2500445319.

Adding to 6671220 its reverse (221766), we get a palindrome (6892986).

The spelling of 6671220 in words is "six million, six hundred seventy-one thousand, two hundred twenty".