852864857 has 16 divisors (see below), whose sum is σ = 1006039440. Its totient is φ = 715395072.

The previous prime is 852864841. The next prime is 852864869. The reversal of 852864857 is 758468258.

It can be written as a sum of positive squares in 8 ways, for example, as 8904256 + 843960601 = 2984^2 + 29051^2 .

It is a cyclic number.

It is not a de Polignac number, because 852864857 - 2⁴ = 852864841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 852864799 and 852864808.

It is not an unprimeable number, because it can be changed into a prime (852864827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60128 + ... + 72945.

It is an arithmetic number, because the mean of its divisors is an integer number (62877465).

Almost surely, 2^852864857 is an apocalyptic number.

It is an amenable number.

852864857 is a deficient number, since it is larger than the sum of its proper divisors (153174583).

852864857 is a wasteful number, since it uses less digits than its factorization.

852864857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133132.

The product of its digits is 4300800, while the sum is 53.

The square root of 852864857 is about 29203.8500372810. The cubic root of 852864857 is about 948.3312743890.

The spelling of 852864857 in words is "eight hundred fifty-two million, eight hundred sixty-four thousand, eight hundred fifty-seven".