7728827065 has 8 divisors (see below), whose sum is σ = 9283084488. Its totient is φ = 6177400320.

The previous prime is 7728827027. The next prime is 7728827101. The reversal of 7728827065 is 5607288277.

It can be written as a sum of positive squares in 4 ways, for example, as 2555909136 + 5172917929 = 50556^2 + 71923^2 .

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

It is not a de Polignac number, because 7728827065 - 2¹¹ = 7728825017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 701656 + ... + 712585.

It is an arithmetic number, because the mean of its divisors is an integer number (1160385561).

Almost surely, 2^7728827065 is an apocalyptic number.

It is an amenable number.

7728827065 is a deficient number, since it is larger than the sum of its proper divisors (1554257423).

7728827065 is a wasteful number, since it uses less digits than its factorization.

7728827065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415339.

The product of its (nonzero) digits is 2634240, while the sum is 52.

The square root of 7728827065 is about 87913.7478725597. The cubic root of 7728827065 is about 1977.1420067407.

The spelling of 7728827065 in words is "seven billion, seven hundred twenty-eight million, eight hundred twenty-seven thousand, sixty-five".