66106366 has 4 divisors (see below), whose sum is σ = 99159552. Its totient is φ = 33053182.

The previous prime is 66106363. The next prime is 66106433. The reversal of 66106366 is 66360166.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66106361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16526590 + ... + 16526593.

It is an arithmetic number, because the mean of its divisors is an integer number (24789888).

Almost surely, 2^66106366 is an apocalyptic number.

66106366 is a deficient number, since it is larger than the sum of its proper divisors (33053186).

66106366 is a wasteful number, since it uses less digits than its factorization.

66106366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33053185.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 66106366 is about 8130.5821439796. The cubic root of 66106366 is about 404.3409817723.

The spelling of 66106366 in words is "sixty-six million, one hundred six thousand, three hundred sixty-six".