6220660 has 12 divisors (see below), whose sum is σ = 13063428. Its totient is φ = 2488256.

The previous prime is 6220651. The next prime is 6220661. The reversal of 6220660 is 660226.

It can be written as a sum of positive squares in 2 ways, for example, as 4717584 + 1503076 = 2172^2 + 1226^2 .

It is a super-2 number, since 2×6220660² = 77393221671200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6220661) 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, 155497 + ... + 155536.

It is an arithmetic number, because the mean of its divisors is an integer number (1088619).

Almost surely, 2^6220660 is an apocalyptic number.

It is an amenable number.

6220660 is an abundant number, since it is smaller than the sum of its proper divisors (6842768).

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

6220660 is a wasteful number, since it uses less digits than its factorization.

6220660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311042 (or 311040 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 6220660 is about 2494.1250971032. The cubic root of 6220660 is about 183.9128840918.

Adding to 6220660 its reverse (660226), we get a palindrome (6880886).

The spelling of 6220660 in words is "six million, two hundred twenty thousand, six hundred sixty".