708861 has 4 divisors (see below), whose sum is σ = 945152. Its totient is φ = 472572.

The previous prime is 708859. The next prime is 708893. The reversal of 708861 is 168807.

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, and also an emirpimes, since its reverse is a distinct semiprime: 168807 = 3 ⋅56269.

It is not a de Polignac number, because 708861 - 2¹ = 708859 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

708861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (708061) 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, 118141 + ... + 118146.

It is an arithmetic number, because the mean of its divisors is an integer number (236288).

2⁷⁰⁸⁸⁶¹ is an apocalyptic number.

It is an amenable number.

708861 is a deficient number, since it is larger than the sum of its proper divisors (236291).

708861 is a wasteful number, since it uses less digits than its factorization.

708861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236290.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 708861 is about 841.9388338828. The cubic root of 708861 is about 89.1634835482.

The spelling of 708861 in words is "seven hundred eight thousand, eight hundred sixty-one".