45065666 has 4 divisors (see below), whose sum is σ = 67598502. Its totient is φ = 22532832.

The previous prime is 45065651. The next prime is 45065687. The reversal of 45065666 is 66656054.

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

It can be written as a sum of positive squares in only one way, i.e., 44023225 + 1042441 = 6635^2 + 1021^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11266415 + ... + 11266418.

Almost surely, 2^45065666 is an apocalyptic number.

45065666 is a deficient number, since it is larger than the sum of its proper divisors (22532836).

45065666 is a wasteful number, since it uses less digits than its factorization.

45065666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22532835.

The product of its (nonzero) digits is 129600, while the sum is 38.

The square root of 45065666 is about 6713.0966029099. The cubic root of 45065666 is about 355.8622589211.

The spelling of 45065666 in words is "forty-five million, sixty-five thousand, six hundred sixty-six".