445801689 has 6 divisors (see below), whose sum is σ = 643935786. Its totient is φ = 297201120.

The previous prime is 445801667. The next prime is 445801711. The reversal of 445801689 is 986108544.

445801689 is a `hidden beast` number, since 4 + 4 + 580 + 1 + 68 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (445801667) and next prime (445801711).

It can be written as a sum of positive squares in only one way, i.e., 373262400 + 72539289 = 19320^2 + 8517^2 .

It is not a de Polignac number, because 445801689 - 2⁷ = 445801561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (445801649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24766752 + ... + 24766769.

It is an arithmetic number, because the mean of its divisors is an integer number (107322631).

Almost surely, 2^445801689 is an apocalyptic number.

It is an amenable number.

445801689 is a deficient number, since it is larger than the sum of its proper divisors (198134097).

445801689 is a wasteful number, since it uses less digits than its factorization.

445801689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49533527 (or 49533524 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 445801689 is about 21114.0164109058. The cubic root of 445801689 is about 763.9188675346.

The spelling of 445801689 in words is "four hundred forty-five million, eight hundred one thousand, six hundred eighty-nine".