445642071 has 8 divisors (see below), whose sum is σ = 679073664. Its totient is φ = 254652600.

The previous prime is 445642061. The next prime is 445642117. The reversal of 445642071 is 170246544.

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

It is not a de Polignac number, because 445642071 - 2¹⁰ = 445641047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445642061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10610505 + ... + 10610546.

It is an arithmetic number, because the mean of its divisors is an integer number (84884208).

Almost surely, 2^445642071 is an apocalyptic number.

445642071 is a deficient number, since it is larger than the sum of its proper divisors (233431593).

445642071 is a wasteful number, since it uses less digits than its factorization.

445642071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21221061.

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 445642071 is about 21110.2361663720. The cubic root of 445642071 is about 763.8276836738.

The spelling of 445642071 in words is "four hundred forty-five million, six hundred forty-two thousand, seventy-one".