445465645 has 8 divisors (see below), whose sum is σ = 534677400. Its totient is φ = 356293440.

The previous prime is 445465639. The next prime is 445465661. The reversal of 445465645 is 546564544.

It can be written as a sum of positive squares in 4 ways, for example, as 29387241 + 416078404 = 5421^2 + 20398^2 .

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

It is not a de Polignac number, because 445465645 - 2¹⁵ = 445432877 is a prime.

It is a super-3 number, since 3×445465645³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 28335 + ... + 41155.

It is an arithmetic number, because the mean of its divisors is an integer number (66834675).

Almost surely, 2^445465645 is an apocalyptic number.

It is an amenable number.

445465645 is a deficient number, since it is larger than the sum of its proper divisors (89211755).

445465645 is a wasteful number, since it uses less digits than its factorization.

445465645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19775.

The product of its digits is 1152000, while the sum is 43.

The square root of 445465645 is about 21106.0570690027. The cubic root of 445465645 is about 763.7268726875.

The spelling of 445465645 in words is "four hundred forty-five million, four hundred sixty-five thousand, six hundred forty-five".