891713 has 4 divisors (see below), whose sum is σ = 894000. Its totient is φ = 889428.

The previous prime is 891707. The next prime is 891743. The reversal of 891713 is 317198.

891713 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 891713 - 2¹² = 887617 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 (891743) 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, 395 + ... + 1392.

It is an arithmetic number, because the mean of its divisors is an integer number (223500).

2⁸⁹¹⁷¹³ is an apocalyptic number.

It is an amenable number.

891713 is a deficient number, since it is larger than the sum of its proper divisors (2287).

891713 is a wasteful number, since it uses less digits than its factorization.

891713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2286.

The product of its digits is 1512, while the sum is 29.

The square root of 891713 is about 944.3055649524. The cubic root of 891713 is about 96.2516905308.

It can be divided in two parts, 8917 and 13, that multiplied together give a triangular number (115921 = T₄₈₁).

The spelling of 891713 in words is "eight hundred ninety-one thousand, seven hundred thirteen".