857882863 has 2 divisors, whose sum is σ = 857882864. Its totient is φ = 857882862.

The previous prime is 857882827. The next prime is 857882867. The reversal of 857882863 is 368288758.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 857882863 - 2⁹ = 857882351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (857882867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428941431 + 428941432.

It is an arithmetic number, because the mean of its divisors is an integer number (428941432).

Almost surely, 2^857882863 is an apocalyptic number.

857882863 is a deficient number, since it is larger than the sum of its proper divisors (1).

857882863 is an equidigital number, since it uses as much as digits as its factorization.

857882863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5160960, while the sum is 55.

The square root of 857882863 is about 29289.6374678827. The cubic root of 857882863 is about 950.1875393374.

The spelling of 857882863 in words is "eight hundred fifty-seven million, eight hundred eighty-two thousand, eight hundred sixty-three".