445502066 has 4 divisors (see below), whose sum is σ = 668253102. Its totient is φ = 222751032.

The previous prime is 445502039. The next prime is 445502069. The reversal of 445502066 is 660205544.

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., 287472025 + 158030041 = 16955^2 + 12571^2 .

It is not an unprimeable number, because it can be changed into a prime (445502069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111375515 + ... + 111375518.

Almost surely, 2^445502066 is an apocalyptic number.

445502066 is a deficient number, since it is larger than the sum of its proper divisors (222751036).

445502066 is a wasteful number, since it uses less digits than its factorization.

445502066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222751035.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 445502066 is about 21106.9198605576. The cubic root of 445502066 is about 763.7476860683.

The spelling of 445502066 in words is "four hundred forty-five million, five hundred two thousand, sixty-six".