857006845 has 8 divisors (see below), whose sum is σ = 1032676920. Its totient is φ = 682759680.

The previous prime is 857006819. The next prime is 857006851. The reversal of 857006845 is 548600758.

It can be written as a sum of positive squares in 4 ways, for example, as 281870521 + 575136324 = 16789^2 + 23982^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-857006845 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354400 + ... + 356809.

It is an arithmetic number, because the mean of its divisors is an integer number (129084615).

Almost surely, 2^857006845 is an apocalyptic number.

It is an amenable number.

857006845 is a deficient number, since it is larger than the sum of its proper divisors (175670075).

857006845 is a wasteful number, since it uses less digits than its factorization.

857006845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711455.

The product of its (nonzero) digits is 268800, while the sum is 43.

The square root of 857006845 is about 29274.6792467484. The cubic root of 857006845 is about 949.8640045401.

The spelling of 857006845 in words is "eight hundred fifty-seven million, six thousand, eight hundred forty-five".