45565666 has 4 divisors (see below), whose sum is σ = 68348502. Its totient is φ = 22782832.

The previous prime is 45565649. The next prime is 45565673. The reversal of 45565666 is 66656554.

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., 45279441 + 286225 = 6729^2 + 535^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11391415 + ... + 11391418.

Almost surely, 2^45565666 is an apocalyptic number.

45565666 is a deficient number, since it is larger than the sum of its proper divisors (22782836).

45565666 is a wasteful number, since it uses less digits than its factorization.

45565666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22782835.

The product of its digits is 648000, while the sum is 43.

The square root of 45565666 is about 6750.2345144447. The cubic root of 45565666 is about 357.1735092777.

The spelling of 45565666 in words is "forty-five million, five hundred sixty-five thousand, six hundred sixty-six".