445642 has 8 divisors (see below), whose sum is σ = 673056. Its totient is φ = 221292.

The previous prime is 445633. The next prime is 445649. The reversal of 445642 is 246544.

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

It is not an unprimeable number, because it can be changed into a prime (445649) by changing a digit.

445642 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, 358 + ... + 1009.

It is an arithmetic number, because the mean of its divisors is an integer number (84132).

2⁴⁴⁵⁶⁴² is an apocalyptic number.

445642 is a deficient number, since it is larger than the sum of its proper divisors (227414).

445642 is a wasteful number, since it uses less digits than its factorization.

445642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1532.

The product of its digits is 3840, while the sum is 25.

The square root of 445642 is about 667.5642291196. The cubic root of 445642 is about 76.3827643109.

The spelling of 445642 in words is "four hundred forty-five thousand, six hundred forty-two".