708385 has 4 divisors (see below), whose sum is σ = 850068. Its totient is φ = 566704.

The previous prime is 708371. The next prime is 708403. The reversal of 708385 is 583807.

708385 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: 583807 = 7 ⋅83401.

It can be written as a sum of positive squares in 2 ways, for example, as 141376 + 567009 = 376^2 + 753^2 .

It is a cyclic number.

It is not a de Polignac number, because 708385 - 2⁵ = 708353 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

708385 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70834 + ... + 70843.

It is an arithmetic number, because the mean of its divisors is an integer number (212517).

2⁷⁰⁸³⁸⁵ is an apocalyptic number.

It is an amenable number.

708385 is a deficient number, since it is larger than the sum of its proper divisors (141683).

708385 is a wasteful number, since it uses less digits than its factorization.

708385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141682.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 708385 is about 841.6561055443. The cubic root of 708385 is about 89.1435213264.

The spelling of 708385 in words is "seven hundred eight thousand, three hundred eighty-five".