66505106 has 16 divisors (see below), whose sum is σ = 103729920. Its totient is φ = 31944240.

The previous prime is 66505099. The next prime is 66505147. The reversal of 66505106 is 60150566.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4760 + ... + 12476.

It is an arithmetic number, because the mean of its divisors is an integer number (6483120).

Almost surely, 2^66505106 is an apocalyptic number.

66505106 is a deficient number, since it is larger than the sum of its proper divisors (37224814).

66505106 is a wasteful number, since it uses less digits than its factorization.

66505106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7889.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 66505106 is about 8155.0662780875. The cubic root of 66505106 is about 405.1523198838.

The spelling of 66505106 in words is "sixty-six million, five hundred five thousand, one hundred six".