445693 has 4 divisors (see below), whose sum is σ = 447580. Its totient is φ = 443808.

The previous prime is 445691. The next prime is 445699. The reversal of 445693 is 396544.

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

It can be written as a sum of positive squares in 2 ways, for example, as 284089 + 161604 = 533^2 + 402^2 .

It is a cyclic number.

It is not a de Polignac number, because 445693 - 2¹ = 445691 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 (445691) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 528 + ... + 1081.

It is an arithmetic number, because the mean of its divisors is an integer number (111895).

2⁴⁴⁵⁶⁹³ is an apocalyptic number.

It is an amenable number.

445693 is a deficient number, since it is larger than the sum of its proper divisors (1887).

445693 is a wasteful number, since it uses less digits than its factorization.

445693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1886.

The product of its digits is 12960, while the sum is 31.

The square root of 445693 is about 667.6024265983. The cubic root of 445693 is about 76.3856779893.

The spelling of 445693 in words is "four hundred forty-five thousand, six hundred ninety-three".