710391 has 24 divisors (see below), whose sum is σ = 1106560. Its totient is φ = 403920.

The previous prime is 710389. The next prime is 710399. The reversal of 710391 is 193017.

It is not a de Polignac number, because 710391 - 2¹ = 710389 is a prime.

It is a Smith number, since the sum of its digits (21) coincides with the sum of the digits of its prime factors.

710391 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (710399) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6846 + ... + 6948.

2⁷¹⁰³⁹¹ is an apocalyptic number.

710391 is a deficient number, since it is larger than the sum of its proper divisors (396169).

710391 is a wasteful number, since it uses less digits than its factorization.

710391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 189, while the sum is 21.

The square root of 710391 is about 842.8469611976. The cubic root of 710391 is about 89.2275873702.

The spelling of 710391 in words is "seven hundred ten thousand, three hundred ninety-one".