806857135 has 64 divisors (see below), whose sum is σ = 1234206720. Its totient is φ = 493637760.

The previous prime is 806857133. The next prime is 806857141. The reversal of 806857135 is 531758608.

It is not a de Polignac number, because 806857135 - 2¹ = 806857133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 806857091 and 806857100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806857133) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1085574 + ... + 1086316.

It is an arithmetic number, because the mean of its divisors is an integer number (19284480).

Almost surely, 2^806857135 is an apocalyptic number.

806857135 is a deficient number, since it is larger than the sum of its proper divisors (427349585).

806857135 is a wasteful number, since it uses less digits than its factorization.

806857135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868.

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 806857135 is about 28405.2307682934. The cubic root of 806857135 is about 930.9625579541.

The spelling of 806857135 in words is "eight hundred six million, eight hundred fifty-seven thousand, one hundred thirty-five".