852778605 has 32 divisors (see below), whose sum is σ = 1591200000. Its totient is φ = 389839296.

The previous prime is 852778601. The next prime is 852778607. The reversal of 852778605 is 506877258.

It is not a de Polignac number, because 852778605 - 2² = 852778601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (852778601) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 77730 + ... + 88019.

It is an arithmetic number, because the mean of its divisors is an integer number (49725000).

Almost surely, 2^852778605 is an apocalyptic number.

It is an amenable number.

852778605 is a deficient number, since it is larger than the sum of its proper divisors (738421395).

852778605 is a wasteful number, since it uses less digits than its factorization.

852778605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165778 (or 165764 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 48.

The square root of 852778605 is about 29202.3732768417. The cubic root of 852778605 is about 948.2993044053.

The spelling of 852778605 in words is "eight hundred fifty-two million, seven hundred seventy-eight thousand, six hundred five".