6662611 has 4 divisors (see below), whose sum is σ = 6668424. Its totient is φ = 6656800.

The previous prime is 6662581. The next prime is 6662633. The reversal of 6662611 is 1162666.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1162666 = 2 ⋅581333.

It is a cyclic number.

It is not a de Polignac number, because 6662611 - 2⁹ = 6662099 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 6662611.

It is not an unprimeable number, because it can be changed into a prime (6662641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550 + ... + 3691.

It is an arithmetic number, because the mean of its divisors is an integer number (1667106).

Almost surely, 2^6662611 is an apocalyptic number.

6662611 is a deficient number, since it is larger than the sum of its proper divisors (5813).

6662611 is a wasteful number, since it uses less digits than its factorization.

6662611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5812.

The product of its digits is 2592, while the sum is 28.

The square root of 6662611 is about 2581.2034015164. The cubic root of 6662611 is about 188.1690327498.

Subtracting from 6662611 its reverse (1162666), we obtain a palindrome (5499945).

The spelling of 6662611 in words is "six million, six hundred sixty-two thousand, six hundred eleven".