827198613 has 24 divisors (see below), whose sum is σ = 1237387320. Its totient is φ = 532172160.

The previous prime is 827198587. The next prime is 827198627. The reversal of 827198613 is 316891728.

827198613 is a `hidden beast` number, since 8 + 27 + 1 + 9 + 8 + 613 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 12552849 + 814645764 = 3543^2 + 28542^2 .

It is not a de Polignac number, because 827198613 - 2⁸ = 827198357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (827191613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14883 + ... + 43311.

It is an arithmetic number, because the mean of its divisors is an integer number (51557805).

Almost surely, 2^827198613 is an apocalyptic number.

It is an amenable number.

827198613 is a deficient number, since it is larger than the sum of its proper divisors (410188707).

827198613 is a wasteful number, since it uses less digits than its factorization.

827198613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28549 (or 28546 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 827198613 is about 28761.0607071436. The cubic root of 827198613 is about 938.7211419359.

The spelling of 827198613 in words is "eight hundred twenty-seven million, one hundred ninety-eight thousand, six hundred thirteen".