828087065 has 8 divisors (see below), whose sum is σ = 1070143368. Its totient is φ = 611510400.

The previous prime is 828087059. The next prime is 828087067. The reversal of 828087065 is 560780828.

It can be written as a sum of positive squares in 4 ways, for example, as 133079296 + 695007769 = 11536^2 + 26363^2 .

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

It is not a de Polignac number, because 828087065 - 2²⁰ = 827038489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (828087067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6369836 + ... + 6369965.

It is an arithmetic number, because the mean of its divisors is an integer number (133767921).

Almost surely, 2^828087065 is an apocalyptic number.

It is an amenable number.

828087065 is a deficient number, since it is larger than the sum of its proper divisors (242056303).

828087065 is a wasteful number, since it uses less digits than its factorization.

828087065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12739819.

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 828087065 is about 28776.5019590638. The cubic root of 828087065 is about 939.0570992470.

The spelling of 828087065 in words is "eight hundred twenty-eight million, eighty-seven thousand, sixty-five".