6646411 has 4 divisors (see below), whose sum is σ = 6787872. Its totient is φ = 6504952.

The previous prime is 6646403. The next prime is 6646417. The reversal of 6646411 is 1146466.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6646411 - 2³ = 6646403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6646411.

It is not an unprimeable number, because it can be changed into a prime (6646417) 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, 70660 + ... + 70753.

It is an arithmetic number, because the mean of its divisors is an integer number (1696968).

Almost surely, 2^6646411 is an apocalyptic number.

6646411 is a deficient number, since it is larger than the sum of its proper divisors (141461).

6646411 is a wasteful number, since it uses less digits than its factorization.

6646411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141460.

The product of its digits is 3456, while the sum is 28.

The square root of 6646411 is about 2578.0634204767. The cubic root of 6646411 is about 188.0163992787.

Subtracting from 6646411 its reverse (1146466), we obtain a palindrome (5499945).

The spelling of 6646411 in words is "six million, six hundred forty-six thousand, four hundred eleven".