8784407645 has 16 divisors (see below), whose sum is σ = 11629042992. Its totient is φ = 6328727040.

The previous prime is 8784407627. The next prime is 8784407647. The reversal of 8784407645 is 5467044878.

It can be written as a sum of positive squares in 8 ways, for example, as 2611005604 + 6173402041 = 51098^2 + 78571^2 .

It is not a de Polignac number, because 8784407645 - 2²⁰ = 8783359069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8784407647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1645442 + ... + 1650771.

It is an arithmetic number, because the mean of its divisors is an integer number (726815187).

Almost surely, 2^8784407645 is an apocalyptic number.

It is an amenable number.

8784407645 is a deficient number, since it is larger than the sum of its proper divisors (2844635347).

8784407645 is a wasteful number, since it uses less digits than its factorization.

8784407645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3296272.

The product of its (nonzero) digits is 6021120, while the sum is 53.

The square root of 8784407645 is about 93725.1708187294. The cubic root of 8784407645 is about 2063.3401404726.

The spelling of 8784407645 in words is "eight billion, seven hundred eighty-four million, four hundred seven thousand, six hundred forty-five".