8865416645 has 8 divisors (see below), whose sum is σ = 10639132920. Its totient is φ = 7091911360.

The previous prime is 8865416569. The next prime is 8865416653. The reversal of 8865416645 is 5466145688.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1480248676 + 7385167969 = 38474^2 + 85937^2 .

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

It is not a de Polignac number, because 8865416645 - 2²⁰ = 8864368069 is a prime.

It is a super-2 number, since 2×8865416645² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62651 + ... + 147159.

It is an arithmetic number, because the mean of its divisors is an integer number (1329891615).

Almost surely, 2^8865416645 is an apocalyptic number.

It is an amenable number.

8865416645 is a deficient number, since it is larger than the sum of its proper divisors (1773716275).

8865416645 is a wasteful number, since it uses less digits than its factorization.

8865416645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105495.

The product of its digits is 5529600, while the sum is 53.

The square root of 8865416645 is about 94156.3415017810. The cubic root of 8865416645 is about 2069.6633870408.

The spelling of 8865416645 in words is "eight billion, eight hundred sixty-five million, four hundred sixteen thousand, six hundred forty-five".