6662105111 has 4 divisors (see below), whose sum is σ = 6817037832. Its totient is φ = 6507172392.

The previous prime is 6662105101. The next prime is 6662105119. The reversal of 6662105111 is 1115012666.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6662105111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6662105119) 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, 77466296 + ... + 77466381.

It is an arithmetic number, because the mean of its divisors is an integer number (1704259458).

Almost surely, 2^6662105111 is an apocalyptic number.

6662105111 is a deficient number, since it is larger than the sum of its proper divisors (154932721).

6662105111 is a wasteful number, since it uses less digits than its factorization.

6662105111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154932720.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 6662105111 is about 81621.7196033017. The cubic root of 6662105111 is about 1881.6427009974.

Adding to 6662105111 its reverse (1115012666), we get a palindrome (7777117777).

The spelling of 6662105111 in words is "six billion, six hundred sixty-two million, one hundred five thousand, one hundred eleven".