828717671 has 2 divisors, whose sum is σ = 828717672. Its totient is φ = 828717670.

The previous prime is 828717641. The next prime is 828717691. The reversal of 828717671 is 176717828.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 828717671 - 2⁶ = 828717607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (828717641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414358835 + 414358836.

It is an arithmetic number, because the mean of its divisors is an integer number (414358836).

Almost surely, 2^828717671 is an apocalyptic number.

828717671 is a deficient number, since it is larger than the sum of its proper divisors (1).

828717671 is an equidigital number, since it uses as much as digits as its factorization.

828717671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 263424, while the sum is 47.

The square root of 828717671 is about 28787.4568345313. The cubic root of 828717671 is about 939.2954094488.

The spelling of 828717671 in words is "eight hundred twenty-eight million, seven hundred seventeen thousand, six hundred seventy-one".