857413 has 4 divisors (see below), whose sum is σ = 902560. Its totient is φ = 812268.

The previous prime is 857411. The next prime is 857419. The reversal of 857413 is 314758.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 857413 - 2¹ = 857411 is a prime.

It is a Duffinian number.

857413 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22545 + ... + 22582.

It is an arithmetic number, because the mean of its divisors is an integer number (225640).

2⁸⁵⁷⁴¹³ is an apocalyptic number.

It is an amenable number.

857413 is a deficient number, since it is larger than the sum of its proper divisors (45147).

857413 is a wasteful number, since it uses less digits than its factorization.

857413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45146.

The product of its digits is 3360, while the sum is 28.

The square root of 857413 is about 925.9659820965. The cubic root of 857413 is about 95.0014034880.

The spelling of 857413 in words is "eight hundred fifty-seven thousand, four hundred thirteen".