445007663 has 4 divisors (see below), whose sum is σ = 453404088. Its totient is φ = 436611240.

The previous prime is 445007603. The next prime is 445007741. The reversal of 445007663 is 366700544.

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

It is a cyclic number.

It is not a de Polignac number, because 445007663 - 2⁶ = 445007599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445007603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4198133 + ... + 4198238.

It is an arithmetic number, because the mean of its divisors is an integer number (113351022).

Almost surely, 2^445007663 is an apocalyptic number.

445007663 is a deficient number, since it is larger than the sum of its proper divisors (8396425).

445007663 is an equidigital number, since it uses as much as digits as its factorization.

445007663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8396424.

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 445007663 is about 21095.2047394663. The cubic root of 445007663 is about 763.4650544455.

The spelling of 445007663 in words is "four hundred forty-five million, seven thousand, six hundred sixty-three".