710991 has 16 divisors (see below), whose sum is σ = 1116000. Its totient is φ = 445824.

The previous prime is 710989. The next prime is 711001. The reversal of 710991 is 199017.

It is not a de Polignac number, because 710991 - 2¹ = 710989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (710911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316 + ... + 1233.

It is an arithmetic number, because the mean of its divisors is an integer number (69750).

2⁷¹⁰⁹⁹¹ is an apocalyptic number.

710991 is a deficient number, since it is larger than the sum of its proper divisors (405009).

710991 is a wasteful number, since it uses less digits than its factorization.

710991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575 (or 1569 counting only the distinct ones).

The product of its (nonzero) digits is 567, while the sum is 27.

The square root of 710991 is about 843.2028225759. The cubic root of 710991 is about 89.2527009987.

The spelling of 710991 in words is "seven hundred ten thousand, nine hundred ninety-one".