6664611 has 8 divisors (see below), whose sum is σ = 9353920. Its totient is φ = 4209192.

The previous prime is 6664607. The next prime is 6664631. The reversal of 6664611 is 1164666.

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

It is not a de Polignac number, because 6664611 - 2² = 6664607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6664631) 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, 58405 + ... + 58518.

It is an arithmetic number, because the mean of its divisors is an integer number (1169240).

Almost surely, 2^6664611 is an apocalyptic number.

6664611 is a deficient number, since it is larger than the sum of its proper divisors (2689309).

6664611 is a wasteful number, since it uses less digits than its factorization.

6664611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116945.

The product of its digits is 5184, while the sum is 30.

The square root of 6664611 is about 2581.5907886418. The cubic root of 6664611 is about 188.1878592236.

Subtracting from 6664611 its reverse (1164666), we obtain a palindrome (5499945).

It can be divided in two parts, 6664 and 611, that multiplied together give a palindrome (4071704).

The spelling of 6664611 in words is "six million, six hundred sixty-four thousand, six hundred eleven".