445663705 has 8 divisors (see below), whose sum is σ = 549250632. Its totient is φ = 346894848.

The previous prime is 445663651. The next prime is 445663711. The reversal of 445663705 is 507366544.

It can be written as a sum of positive squares in 4 ways, for example, as 286828096 + 158835609 = 16936^2 + 12603^2 .

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 445663705 - 2¹⁹ = 445139417 is a prime.

It is a super-2 number, since 2×445663705² = 397232275908654050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1204312 + ... + 1204681.

It is an arithmetic number, because the mean of its divisors is an integer number (68656329).

Almost surely, 2^445663705 is an apocalyptic number.

It is an amenable number.

445663705 is a deficient number, since it is larger than the sum of its proper divisors (103586927).

445663705 is a wasteful number, since it uses less digits than its factorization.

445663705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2409035.

The product of its (nonzero) digits is 302400, while the sum is 40.

The square root of 445663705 is about 21110.7485656004. The cubic root of 445663705 is about 763.8400436534.

The spelling of 445663705 in words is "four hundred forty-five million, six hundred sixty-three thousand, seven hundred five".