828466865 has 16 divisors (see below), whose sum is σ = 1058475600. Its totient is φ = 620328960.

The previous prime is 828466841. The next prime is 828466879. The reversal of 828466865 is 568664828.

It can be written as a sum of positive squares in 8 ways, for example, as 9591409 + 818875456 = 3097^2 + 28616^2 .

It is not a de Polignac number, because 828466865 - 2¹⁴ = 828450481 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11540 + ... + 42309.

It is an arithmetic number, because the mean of its divisors is an integer number (66154725).

Almost surely, 2^828466865 is an apocalyptic number.

828466865 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

828466865 is a deficient number, since it is larger than the sum of its proper divisors (230008735).

828466865 is a wasteful number, since it uses less digits than its factorization.

828466865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54052.

The product of its digits is 4423680, while the sum is 53.

The square root of 828466865 is about 28783.1003368296. The cubic root of 828466865 is about 939.2006426774.

The spelling of 828466865 in words is "eight hundred twenty-eight million, four hundred sixty-six thousand, eight hundred sixty-five".