445507673 has 8 divisors (see below), whose sum is σ = 480923016. Its totient is φ = 410256000.

The previous prime is 445507669. The next prime is 445507693. The reversal of 445507673 is 376705544.

It can be written as a sum of positive squares in 4 ways, for example, as 635209 + 444872464 = 797^2 + 21092^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 445507673 - 2² = 445507669 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 445507673.

It is not an unprimeable number, because it can be changed into a prime (445507693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35228 + ... + 46173.

It is an arithmetic number, because the mean of its divisors is an integer number (60115377).

Almost surely, 2^445507673 is an apocalyptic number.

It is an amenable number.

445507673 is a deficient number, since it is larger than the sum of its proper divisors (35415343).

445507673 is a wasteful number, since it uses less digits than its factorization.

445507673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81835.

The product of its (nonzero) digits is 352800, while the sum is 41.

The square root of 445507673 is about 21107.0526838780. The cubic root of 445507673 is about 763.7508901802.

The spelling of 445507673 in words is "four hundred forty-five million, five hundred seven thousand, six hundred seventy-three".