857517074 has 4 divisors (see below), whose sum is σ = 1286275614. Its totient is φ = 428758536.

The previous prime is 857517053. The next prime is 857517079. The reversal of 857517074 is 470715758.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 665278849 + 192238225 = 25793^2 + 13865^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (857517079) by changing a digit.

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 as a sum of consecutive naturals, namely, 214379267 + ... + 214379270.

Almost surely, 2^857517074 is an apocalyptic number.

857517074 is a deficient number, since it is larger than the sum of its proper divisors (428758540).

857517074 is a wasteful number, since it uses less digits than its factorization.

857517074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428758539.

The product of its (nonzero) digits is 274400, while the sum is 44.

The square root of 857517074 is about 29283.3924605740. The cubic root of 857517074 is about 950.0524713400.

The spelling of 857517074 in words is "eight hundred fifty-seven million, five hundred seventeen thousand, seventy-four".