706891 has 4 divisors (see below), whose sum is σ = 710784. Its totient is φ = 703000.

The previous prime is 706883. The next prime is 706897. The reversal of 706891 is 198607.

706891 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 an emirpimes, since its reverse is a distinct semiprime: 198607 = 19 ⋅10453.

It is a cyclic number.

It is not a de Polignac number, because 706891 - 2³ = 706883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (706897) 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, 1660 + ... + 2041.

It is an arithmetic number, because the mean of its divisors is an integer number (177696).

2⁷⁰⁶⁸⁹¹ is an apocalyptic number.

706891 is a deficient number, since it is larger than the sum of its proper divisors (3893).

706891 is a wasteful number, since it uses less digits than its factorization.

706891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3892.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 706891 is about 840.7681012027. The cubic root of 706891 is about 89.0808086501.

The spelling of 706891 in words is "seven hundred six thousand, eight hundred ninety-one".