445785516 has 54 divisors (see below), whose sum is σ = 1230447036. Its totient is φ = 134959200.

The previous prime is 445785511. The next prime is 445785541. The reversal of 445785516 is 615587544.

445785516 is a `hidden beast` number, since 4 + 4 + 57 + 85 + 516 = 666.

It is not an unprimeable number, because it can be changed into a prime (445785511) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 419626 + ... + 420686.

Almost surely, 2^445785516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445785516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (615223518).

445785516 is an abundant number, since it is smaller than the sum of its proper divisors (784661520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

445785516 is a wasteful number, since it uses less digits than its factorization.

445785516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143 (or 1077 counting only the distinct ones).

The product of its digits is 672000, while the sum is 45.

The square root of 445785516 is about 21113.6334154025. The cubic root of 445785516 is about 763.9096294888.

The spelling of 445785516 in words is "four hundred forty-five million, seven hundred eighty-five thousand, five hundred sixteen".