827198357 has 2 divisors, whose sum is σ = 827198358. Its totient is φ = 827198356.

The previous prime is 827198347. The next prime is 827198399. The reversal of 827198357 is 753891728.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 557384881 + 269813476 = 23609^2 + 16426^2 .

It is a cyclic number.

It is not a de Polignac number, because 827198357 - 2⁶ = 827198293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (827198347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 413599178 + 413599179.

It is an arithmetic number, because the mean of its divisors is an integer number (413599179).

Almost surely, 2^827198357 is an apocalyptic number.

It is an amenable number.

827198357 is a deficient number, since it is larger than the sum of its proper divisors (1).

827198357 is an equidigital number, since it uses as much as digits as its factorization.

827198357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 50.

The square root of 827198357 is about 28761.0562566815. The cubic root of 827198357 is about 938.7210450980.

The spelling of 827198357 in words is "eight hundred twenty-seven million, one hundred ninety-eight thousand, three hundred fifty-seven".