708581 has 4 divisors (see below), whose sum is σ = 712992. Its totient is φ = 704172.

The previous prime is 708569. The next prime is 708583. The reversal of 708581 is 185807.

It is a happy number.

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: 185807 = 71 ⋅2617.

It is a cyclic number.

It is not a de Polignac number, because 708581 - 2⁶ = 708517 is a prime.

It is a super-2 number, since 2×708581² = 1004174067122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (708583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1955 + ... + 2288.

It is an arithmetic number, because the mean of its divisors is an integer number (178248).

2⁷⁰⁸⁵⁸¹ is an apocalyptic number.

It is an amenable number.

708581 is a deficient number, since it is larger than the sum of its proper divisors (4411).

708581 is a wasteful number, since it uses less digits than its factorization.

708581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4410.

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 708581 is about 841.7725345959. The cubic root of 708581 is about 89.1517421474.

The spelling of 708581 in words is "seven hundred eight thousand, five hundred eighty-one".