445005645 has 16 divisors (see below), whose sum is σ = 813724800. Its totient is φ = 203431104.

The previous prime is 445005611. The next prime is 445005703. The reversal of 445005645 is 546500544.

It is not a de Polignac number, because 445005645 - 2⁸ = 445005389 is a prime.

It is a super-3 number, since 3×445005645³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2118970 + ... + 2119179.

It is an arithmetic number, because the mean of its divisors is an integer number (50857800).

Almost surely, 2^445005645 is an apocalyptic number.

It is an amenable number.

445005645 is a deficient number, since it is larger than the sum of its proper divisors (368719155).

445005645 is a wasteful number, since it uses less digits than its factorization.

445005645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4238164.

The product of its (nonzero) digits is 48000, while the sum is 33.

The square root of 445005645 is about 21095.1569086366. The cubic root of 445005645 is about 763.4639004019.

The spelling of 445005645 in words is "four hundred forty-five million, five thousand, six hundred forty-five".