827474906917 has 2 divisors, whose sum is σ = 827474906918. Its totient is φ = 827474906916.

The previous prime is 827474906903. The next prime is 827474906971. The reversal of 827474906917 is 719609474728.

It is a happy number.

Together with next prime (827474906971) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 797209693956 + 30265212961 = 892866^2 + 173969^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-827474906917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (827474936917) by changing a digit.

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 as a sum of consecutive naturals, namely, 413737453458 + 413737453459.

It is an arithmetic number, because the mean of its divisors is an integer number (413737453459).

Almost surely, 2^827474906917 is an apocalyptic number.

It is an amenable number.

827474906917 is a deficient number, since it is larger than the sum of its proper divisors (1).

827474906917 is an equidigital number, since it uses as much as digits as its factorization.

827474906917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42674688, while the sum is 64.

The spelling of 827474906917 in words is "eight hundred twenty-seven billion, four hundred seventy-four million, nine hundred six thousand, nine hundred seventeen".