66066206 has 4 divisors (see below), whose sum is σ = 99099312. Its totient is φ = 33033102.

The previous prime is 66066197. The next prime is 66066227. The reversal of 66066206 is 60266066.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16516550 + ... + 16516553.

It is an arithmetic number, because the mean of its divisors is an integer number (24774828).

Almost surely, 2^66066206 is an apocalyptic number.

66066206 is a deficient number, since it is larger than the sum of its proper divisors (33033106).

66066206 is a wasteful number, since it uses less digits than its factorization.

66066206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33033105.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 66066206 is about 8128.1120809201. The cubic root of 66066206 is about 404.2590853569.

It can be divided in two parts, 660 and 66206, that added together give a palindrome (66866).

The spelling of 66066206 in words is "sixty-six million, sixty-six thousand, two hundred six".