849561685 has 16 divisors (see below), whose sum is σ = 1175429376. Its totient is φ = 577398528.

The previous prime is 849561677. The next prime is 849561719. The reversal of 849561685 is 586165948.

It is not a de Polignac number, because 849561685 - 2³ = 849561677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103449 + ... + 111358.

It is an arithmetic number, because the mean of its divisors is an integer number (73464336).

Almost surely, 2^849561685 is an apocalyptic number.

It is an amenable number.

849561685 is a deficient number, since it is larger than the sum of its proper divisors (325867691).

849561685 is a wasteful number, since it uses less digits than its factorization.

849561685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214932.

The product of its digits is 2073600, while the sum is 52.

The square root of 849561685 is about 29147.2414646738. The cubic root of 849561685 is about 947.1053849247.

The spelling of 849561685 in words is "eight hundred forty-nine million, five hundred sixty-one thousand, six hundred eighty-five".