6620411 has 8 divisors (see below), whose sum is σ = 7637760. Its totient is φ = 5620968.

The previous prime is 6620407. The next prime is 6620423. The reversal of 6620411 is 1140266.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6620411 - 2² = 6620407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6620401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3671 + ... + 5168.

It is an arithmetic number, because the mean of its divisors is an integer number (954720).

Almost surely, 2^6620411 is an apocalyptic number.

6620411 is a deficient number, since it is larger than the sum of its proper divisors (1017349).

6620411 is a wasteful number, since it uses less digits than its factorization.

6620411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8953.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 6620411 is about 2573.0159346572. The cubic root of 6620411 is about 187.7709126748.

Adding to 6620411 its reverse (1140266), we get a palindrome (7760677).

The spelling of 6620411 in words is "six million, six hundred twenty thousand, four hundred eleven".