6669611 has 4 divisors (see below), whose sum is σ = 7182672. Its totient is φ = 6156552.

The previous prime is 6669587. The next prime is 6669617. The reversal of 6669611 is 1169666.

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 6669611 - 2⁶ = 6669547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6669617) 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, 256511 + ... + 256536.

It is an arithmetic number, because the mean of its divisors is an integer number (1795668).

Almost surely, 2^6669611 is an apocalyptic number.

6669611 is a deficient number, since it is larger than the sum of its proper divisors (513061).

6669611 is a wasteful number, since it uses less digits than its factorization.

6669611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513060.

The product of its digits is 11664, while the sum is 35.

The square root of 6669611 is about 2582.5590022302. The cubic root of 6669611 is about 188.2349089357.

Subtracting from 6669611 its reverse (1169666), we obtain a palindrome (5499945).

The spelling of 6669611 in words is "six million, six hundred sixty-nine thousand, six hundred eleven".