861713 has 8 divisors (see below), whose sum is σ = 920808. Its totient is φ = 803584.

The previous prime is 861703. The next prime is 861719. The reversal of 861713 is 317168.

It can be written as a sum of positive squares in 4 ways, for example, as 652864 + 208849 = 808^2 + 457^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 861713 - 2¹⁰ = 860689 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (861719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2795 + ... + 3087.

It is an arithmetic number, because the mean of its divisors is an integer number (115101).

2⁸⁶¹⁷¹³ is an apocalyptic number.

It is an amenable number.

861713 is a deficient number, since it is larger than the sum of its proper divisors (59095).

861713 is a wasteful number, since it uses less digits than its factorization.

861713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483.

The product of its digits is 1008, while the sum is 26.

The square root of 861713 is about 928.2849777951. The cubic root of 861713 is about 95.1599521430.

The spelling of 861713 in words is "eight hundred sixty-one thousand, seven hundred thirteen".