6656411 has 4 divisors (see below), whose sum is σ = 6836352. Its totient is φ = 6476472.

The previous prime is 6656393. The next prime is 6656437. The reversal of 6656411 is 1146566.

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 6656411 - 2⁶ = 6656347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6656471) 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, 89915 + ... + 89988.

It is an arithmetic number, because the mean of its divisors is an integer number (1709088).

Almost surely, 2^6656411 is an apocalyptic number.

6656411 is a deficient number, since it is larger than the sum of its proper divisors (179941).

6656411 is a wasteful number, since it uses less digits than its factorization.

6656411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179940.

The product of its digits is 4320, while the sum is 29.

The square root of 6656411 is about 2580.0021317821. The cubic root of 6656411 is about 188.1106467271.

The spelling of 6656411 in words is "six million, six hundred fifty-six thousand, four hundred eleven".