445160666 has 4 divisors (see below), whose sum is σ = 667741002. Its totient is φ = 222580332.

The previous prime is 445160629. The next prime is 445160669. The reversal of 445160666 is 666061544.

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., 255520225 + 189640441 = 15985^2 + 13771^2 .

It is not an unprimeable number, because it can be changed into a prime (445160669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111290165 + ... + 111290168.

Almost surely, 2^445160666 is an apocalyptic number.

445160666 is a deficient number, since it is larger than the sum of its proper divisors (222580336).

445160666 is a wasteful number, since it uses less digits than its factorization.

445160666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222580335.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 445160666 is about 21098.8309154797. The cubic root of 445160666 is about 763.5525428706.

The spelling of 445160666 in words is "four hundred forty-five million, one hundred sixty thousand, six hundred sixty-six".