445630 has 8 divisors (see below), whose sum is σ = 802152. Its totient is φ = 178248.

The previous prime is 445619. The next prime is 445631. The reversal of 445630 is 36544.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445631) by changing a digit.

445630 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22272 + ... + 22291.

It is an arithmetic number, because the mean of its divisors is an integer number (100269).

2⁴⁴⁵⁶³⁰ is an apocalyptic number.

445630 is a deficient number, since it is larger than the sum of its proper divisors (356522).

445630 is a wasteful number, since it uses less digits than its factorization.

445630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44570.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 445630 is about 667.5552411599. Note that the first 3 decimals coincide. The cubic root of 445630 is about 76.3820787072.

The spelling of 445630 in words is "four hundred forty-five thousand, six hundred thirty".