857713505 has 16 divisors (see below), whose sum is σ = 1132769664. Its totient is φ = 618266880.

The previous prime is 857713501. The next prime is 857713543. The reversal of 857713505 is 505317758.

It is not a de Polignac number, because 857713505 - 2² = 857713501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (857713501) 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 15 ways as a sum of consecutive naturals, for example, 62789 + ... + 75218.

It is an arithmetic number, because the mean of its divisors is an integer number (70798104).

Almost surely, 2^857713505 is an apocalyptic number.

It is an amenable number.

857713505 is a deficient number, since it is larger than the sum of its proper divisors (275056159).

857713505 is a wasteful number, since it uses less digits than its factorization.

857713505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138136.

The product of its (nonzero) digits is 147000, while the sum is 41.

The square root of 857713505 is about 29286.7462344317. The cubic root of 857713505 is about 950.1250084804.

The spelling of 857713505 in words is "eight hundred fifty-seven million, seven hundred thirteen thousand, five hundred five".